A: Ben had a hard time trying to find the leak in the pipe.
B: But he ......... stop it, wasn't he?
a) was allowed to
b) mustn't
c) could
d) was able to
21. A: Was your suitcase very heavy?
B: Yes, but I ..... carry it by myself.
a) was able to
b) can't
c) ought
22. A: I saw Tina in town last night
B: You ..... have seen her. She's on holiday in Spain.
a) would
b) could
c) can't
23. A: .......... you drive?
B: Yes, but I haven't got my own car.
a) might
b) should
c) can
24. A: I feel very tired today
B: You ..... have stayed up so late last night.
a) shouldn't
Answer (1)
The phrase "but he was able to stop it, wasn't he?" suggests that despite the difficulty, Ben finally succeeded in stopping the leak. "Was able to" is used when someone succeeds in doing something.
A: Was your suitcase very heavy? B: Yes, but I ..... carry it by myself.
a) was able to
b) can't
c) ought
Answer: a) was able to.
