问题

The sportsman ________ save a drowning boy that afternoon;the boy’s parents appreciated him very much.[ ]

A: might
B: could
C: was able to
D: must

正确答案是：

同类题型

I ____ to go for a walk.– But I _____ going shopping.

Please _____ your homework _____ before youhand it in.

You must______your cigarette when you areat the gas station.

What_____just now

_______to reach them on the phone, we sent an e-mail instead.[ ]