Question

【题目】It is dangerous ________ with a knife. It will cut your fingers.

A. play B. playing C. plays D. to play

Answer 1

【答案】D

【解析】

句意：玩小刀很危险。它会割破你的手指。A. play 动词原形；B. 分词或动名词；C. plays动词三单式；D. to play动词不定式。It’s+形容词+to do sth.意思是“做某事怎么样”，it用作形式主语，动词不定式是真正的主语，故答案为D。