Номер 1
1)Could you come for lunch on Tuesday? I'm afraid I can't on tuesday but I might be able to come on Wednesday.
2)Can you help me buy a new suit next week. I'm afraid I can't next week but I might be able the week after.
3)Can you look my computer this week? I'm afraid I can't but might be able to help next week.
4)Can you translate a letter this evening? I'm afraid I can't but I might be able to help tomorrow evening.
номер 2.
1)couldn't
2)be able
3)couldn't
4)be able
5)couldn't
6)can
7) be able
8)Could
9)to be able
10)wasn't able to
11)couldn't
12)could