Question

He was a good swimmer,so he ________ swim to the bank when the boat turned over

He was a good swimmer,so he ________ swim to the bank when the boat turned over．
A. could
B. was able to
C. should
D. might

Answer 1

答案B
解析：句意为：他是一名优秀的游泳者，当翻了船时，他能成功地游到对岸。在肯定句中，当谈及过去的能力，并且要表示确实使用了这种能力时，要was/were able to，而不用could．