Fill in the gaps with the right form of the verb:
Use: was able, have to, shouldn’t, will be able, couldn’t, could, can’t
1. When I looked at the test, I _____ answer many questions.
2. My camera doesn’t work, so I _____take any pictures.
3. If I learn English, I _____ to understand people abroad.
4. The singer had a sore throat. However, she _____to sing at the concert.
5. He _____ sing very well when he was twenty.
6. You _____ eat a lot of sweets.
7. They didn’t _____ go to school l

1 couldn't2 can't  3 will be able  4 was able  5 could  6 should't 7 have to 

1. When I looked at the test, I ___couldn’t__ answer many questions. 2. My camera doesn’t work, so I ___can’t__take any pictures. 3. If I learn English, I __will be able___ to understand people abroad. 4. The singer had a sore throat. However, she __was able___to sing at the concert. 5. He __could___ sing very well when he was twenty. 6. You __shouldn’t__ eat a lot of sweets. 7. They didn’t __have to___ go to school.