Question

【题目】—Can he promise ________ us?

—Of course! He is very friendly.

A.teachB.teachesC.to teachD.teaching

Answer 1

【答案】C

【解析】

句意：——他能保证教我们吗？——当然！他非常友好。

考查非谓语动词。teach原形；teaches一般现在时；to teach不定式；teaching动名词。“promise to do sth”保证做某事，后应接动词不定式。故选C。