Question

【题目】The house was _________ fire last night, but the firemen _______ soon.

A. on; put down it B. at; put it down C. at; put out it D. on; put it out

Answer 1

【答案】D

【解析】句意：那座房子昨天晚上着火了，但是消防员很快把它扑灭了。短语be on fire表示着火；短语put out表示熄灭；put down放下；这里副词短语，这里的代词it放在中间。根据题意，故选D。