问题

He was a good swimmer so he _____ swim to the river bank when the boat sank.[ ]

A: is able to
B: could
C: was able to
D: can

正确答案是：

同类题型

Mother promised she _____ me anEnglish-Chinese dictionary

My uncle is a doctor. He sometimes has to work _______ night.

Help yourself ____ some more fruit.

下列加点字的解释全都不正确的一项是（）

Have you _____ some new ideas?—Yeah. I’ll tell you later.