I still have a few doubts on school rules.

I hope you can have a look at them. It's urgent.

1)You mustn't dirnk or eat during lessons/school hours.
2) You mustn't ask questions when your teacher explains/is explaining/during explanations.
3) You must take notes if you want to remember your teachers' explanations.
4) You mustn't cheat during written tests.
5) You mustn't prompt during oral tests.
When I enter school, I can't use the telephone.
6) When I arrive home, I have to do a lot of housework.
At home and at school I must sort the rubbish (trash). There is a bin for paper, one for glass and one for plastic.
7) I hang the clothes on the clothes line in the sun (?)
After ironing them I hang them in the wardrobe or I put them into the proper drawer.
I must be silent during the teacher's explanation.
I can ask a question, if the teacher gives me permission.
I have to take out the rubbish OR take the rubbish out.
Before pressing the start button, I add the washing powder
I wait for the clothes to wash.
At home I have to take care of the family pets.
You mustn't prompt your classmate dring an oral test.
You mustn't forge your parents' signature.
You must type your homework into your computer if your handwriting is unclear.

When the washing machine has finished better: When the washing is finished

dring = during (3rd sentence from the end

AOK

Sra

Here are the rules you mentioned and some explanations on each of them:

1) You mustn't drink or eat during lessons/school hours.
Explanation: This rule is in place to ensure that students are focused on their learning and not distracted by food or drinks.

2) You mustn't ask questions when your teacher explains/is explaining/during explanations.
Explanation: This rule is meant to encourage students to listen attentively to the teacher's explanation without interrupting. However, it's important to note that you can ask questions once the explanation is over and the teacher opens the floor for questions.

3) You must take notes if you want to remember your teachers' explanations.
Explanation: Taking notes is a helpful way to retain information and remember what the teacher is explaining. It aids in the learning process and is particularly useful when studying for exams or reviewing the lesson later.

4) You mustn't cheat during written tests.
Explanation: Cheating is not allowed as it compromises the integrity of the test and gives an unfair advantage to some students. It's important to rely on your own knowledge and skills during assessments.

5) You mustn't prompt during oral tests.
Explanation: Prompting during oral tests means giving hints or cues to the person being tested, which is not allowed. Oral tests are designed to evaluate the individual's knowledge and speaking abilities without external assistance.

6) When I enter school, I can't use the telephone.
Explanation: It's common for schools to have restrictions on the use of personal phones during school hours to minimize distractions and maintain focus on studies.

7) When I arrive home, I have to do a lot of housework.
Explanation: This rule may vary depending on individual family expectations. Some families have designated chores or responsibilities for their children to help with the household tasks.

8) At home and at school, I must sort the rubbish (trash). There is a bin for paper, one for glass, and one for plastic.
Explanation: Sorting recyclable materials is an eco-friendly practice. By separating the rubbish into different bins based on their materials, it becomes easier to recycle and reduce the impact on the environment.

9) I hang the clothes on the clothesline in the sun.
Explanation: Hanging clothes in the sun can aid in drying and disinfecting them naturally. Sunlight helps remove odors, kill bacteria, and freshen up the clothes.

10) After ironing them, I hang them in the wardrobe or put them into the proper drawer.
Explanation: This step ensures that once the clothes are ironed, they are stored properly to avoid wrinkles and maintain their neat appearance.

11) I must be silent during the teacher's explanation.
Explanation: Remaining silent during the teacher's explanation allows everyone in the class to hear and understand the information being shared. It fosters a conducive learning environment and ensures that students can focus on what the teacher is saying.

12) I can ask a question if the teacher gives me permission.
Explanation: While it's important to listen without interrupting, it's also encouraged to ask questions for clarification and deeper understanding. However, it's essential to follow the teacher's guidance and seek permission before asking a question.

13) I have to take out the rubbish OR take the rubbish out.
Explanation: Both phrases mean the same thing and refer to the action of removing the trash from inside the house to the appropriate disposal area outside.

14) Before pressing the start button, I add the washing powder.
Explanation: Adding washing powder to the washing machine before starting the wash cycle ensures that the clothes are properly cleaned and refreshed.

15) I wait for the clothes to wash.
Explanation: After starting the washing machine, you need to allow the cycle to complete its duration for the clothes to be thoroughly cleaned.

16) At home, I have to take care of the family pets.
Explanation: Taking care of pets is a responsible task that involves feeding, grooming, and providing general care and attention to the well-being of the animals.

17) You mustn't prompt your classmate during an oral test.
Explanation: Similar to rule #5, prompting a classmate during an oral test is not allowed. It's important that each individual relies on their own knowledge and abilities during assessments.

18) You mustn't forge your parents' signature.
Explanation: Forging a signature means imitating someone else's signature without their consent or knowledge. It is considered dishonest and can have serious consequences. Always obtain the necessary permissions from your parents and seek their genuine signature when required.

19) You must type your homework into your computer if your handwriting is unclear.
Explanation: If your handwriting is difficult to read, it's a good practice to type your homework using a computer or other typing devices. This ensures clarity and makes it easier for your teachers to understand and assess your work.

Regarding your final question about the washing machine, both "When the washing machine has finished" and "When the washing is finished" are acceptable phrases to indicate the completion of the washing cycle.