Question

I may/ might spend my holidays in Spain. The weather might / may be better tomorrow.Dennis can/could play piano since he was 13.You can / could find any kind of information on the Internet.I cannot / can run so fast!We must / mustn't build this houseby autumn.We should / must think about wild life more often.You /need/ needn't buy mineral water, we have plentyHe must / can take better care of himself.We can/ need your help.I had to / need go to see the doctor last week because I was very ill.Could / can you give me his address?​

Answer 1

might

might

could

can

cannot

must

must

dont need

must

need

had to

can

Answer 2

Your sentences are a mix of modal verbs (may, might, can, could, must, mustn't, should, need, needn't, and had to) that express various levels of possibility, permission, obligation, and ability. I'll provide the correct choices for each sentence:

1. I may spend my holidays in Spain.
2. The weather may be better tomorrow.
3. Dennis could play the piano since he was 13.
4. You can find any kind of information on the Internet.
5. I cannot run so fast!
6. We must build this house by autumn.
7. We should think about wildlife more often.
8. You needn't buy mineral water; we have plenty.
9. He must take better care of himself.
10. We can use your help.
11. I had to go to see the doctor last week because I was very ill.
12. Could you give me his address?

These corrections are based on the most appropriate usage of the modal verbs in the given contexts.