Question

【题目】Mary is afraid ________ the river.

A. crossing B. to cross

C. cross D. crosses

Answer 1

【答案】B

【解析】

句意：Mary害怕过河。crossing穿过，渡过，动名词；to cross动词不定式；cross动词原形；crosses第三人称单数形式。句中使用了句型be afraid to do sth.害怕做某事。故应选B。