Could you please check these sentences, please? Thank you.

1) It is advisable for you to do the exercise.
2) It would be better/best if he did the exercise. (but NOT for him to do)
3) It is difficult for him to do the exercise.
It is easy for him to do the exercise.
4)I'm happy/enthusiastic about my exam's result.
5) I'm satisfied with my exam result.
I'm worried about tomorrow's test.
I'm cheerful about (I can't find an example). I'm excited
6) I'm confident about the future.
I'm fed up with/tired of your behavior.
I'm annoyed with your behavior.
I'm cross/angry with you about your behaviour. I'm pleased/delighted with the present you gave me.

I'm cheerful about our upcoming vacation.

Everything else reads fine.

1) The sentence "It is advisable for you to do the exercise" is correct. "Advisable" means that it is recommended or a good idea to do something.

To check the sentence, you can consider if it makes sense in context. If the speaker is talking about the benefits of doing exercise or giving advice to someone, then it would be appropriate to use this sentence.

2) The sentence "It would be better/best if he did the exercise" is also correct. "Better" and "best" both indicate an improvement or a more desirable outcome.

To check the sentence, you can evaluate if it expresses the intended meaning. If the speaker wants to suggest that doing the exercise would lead to a better outcome for him, then this sentence can be used. However, note that in this context, "It would be better/best for him to do the exercise" would be the more common way to phrase it.

3) The sentences "It is difficult for him to do the exercise" and "It is easy for him to do the exercise" are both grammatically correct. "Difficult" means hard or challenging, while "easy" means not hard or not challenging.

To check these sentences, you can ask whether it accurately describes the level of difficulty for him. If doing the exercise poses a challenge or is challenging for him, then the first sentence can be used. If doing the exercise is not a challenge or comes naturally to him, then the second sentence can be used.

4) The sentence "I'm happy/enthusiastic about my exam's result" is correct. It expresses the speaker's emotions regarding the outcome of the exam.

To check the sentence, you can assess if it accurately represents your emotions towards your exam result. If you feel happy or enthusiastic about it, then this sentence can be used.

5) The sentences "I'm satisfied with my exam result" and "I'm worried about tomorrow's test" are both grammatically correct. "Satisfied" means content or pleased, while "worried" means anxious or concerned.

To check these sentences, you can determine if the emotion accurately represents your feelings towards your exam result or tomorrow's test. If you are content with your exam result or anxious about tomorrow's test, then these sentences can be used.

Regarding the sentence "I'm cheerful about (I can't find an example). I'm excited," since you couldn't provide an example, it is difficult to evaluate the correctness. Generally, "cheerful" means happy or in a good mood, and "excited" means enthusiastic or eager.

6) The sentence "I'm confident about the future" is correct. "Confident" means having trust or assurance in something.

To check this sentence, you can consider if it accurately represents your confidence in the future. If you have trust or assurance in what lies ahead, then this sentence can be used.

Regarding the sentences "I'm fed up with/tired of your behavior," "I'm annoyed with your behavior," "I'm cross/angry with you about your behavior," and "I'm pleased/delighted with the present you gave me," all of them are grammatically correct and express different emotions towards someone's behavior or a present received.

To check these sentences, you can evaluate if they accurately reflect your emotions towards the person's behavior or the received present. If you are fed up with, annoyed with, cross/angry with, or pleased/delighted with the respective situations, then these sentences can be used.