I left out the following sentences.I hope you can have a look at them.

1) Can you change this 100-Euro note into two 50-Euro notes, please?
2) I was last in the hospital when I had my tonsils and adenoids out/when I was operated on my knee.
3) April is described as the cruellest month since it stirs the dull roots of flowers and trees out of their winter sleep.
4) Winter is better because it keeps everything warm under the snow. Spring mixes memory of the past winter, when the vegetation is covered by forgetful snow, with the desire for a new life.
5) When is he due to be discharged from hospital?
6) I'm not going to put off your Maths test just because you'll have two tests on the same day.
7) We'll draw lot to determine who is going to be tested next time.
I'm going to look for my tennis racket in the cupbaord.

Did you read my other post? Go through all sentences in this post and the last one -- choose the 5 (or fewer) that you are TRULY unsure of.

Sure, here are the explanations for the sentences you provided:

1) To change a 100-Euro note into two 50-Euro notes, you can go to a bank or a currency exchange counter. Approach the teller or the person behind the counter and politely ask if they can assist you with changing the note. You can say something like, "Can you change this 100-Euro note into two 50-Euro notes, please?"

2) The sentence describes a past event where the speaker was either in the hospital to have their tonsils and adenoids removed or to undergo knee surgery. If you want to express a similar experience, you can say, "I was last in the hospital when I had my tonsils and adenoids removed" or "I was last in the hospital when I had knee surgery."

3) This sentence is from T.S. Eliot's poem "The Waste Land" and describes the month of April as the cruelest month because it awakens the dormant roots of flowers and trees from their winter slumber. If you're referring to the poem, you can simply state, "In T.S. Eliot's poem 'The Waste Land,' April is described as the cruelest month because it stirs the dull roots of flowers and trees out of their winter sleep."

4) The sentence expresses a personal preference for winter, highlighting how it keeps everything warm beneath the snow. It also touches on the transition from winter to spring and the anticipation of new life. If you want to share a similar viewpoint, you can say, "I prefer winter because it maintains warmth under the snow. Spring, on the other hand, combines memories of the past winter with the desire for new life as the vegetation emerges."

5) This sentence asks about the expected discharge date of a certain individual from the hospital. If you want to inquire about someone's discharge, you can say, "When is he expected to be discharged from the hospital?"

6) The sentence implies that the person delivering the statement will not postpone or delay the Mathematics test, even if there are other exams scheduled for the same day. If you want to convey a similar message, you can simply state, "I will not reschedule your Maths test just because you have two tests on the same day."

7) The sentence suggests drawing lots or using a randomized method to determine the person who will be tested next time. If you wish to establish a similar selection process, you can say, "We will draw lots to decide who will be tested next time."

As for your final sentence, "I'm going to look for my tennis racket in the cupboard," it simply states your intention to search for your tennis racket in the cupboard. There is no need for further explanation on how to locate it.

I hope these explanations clarify the sentences you provided! Let me know if you have any more questions.