Question

【题目】 Our teacher says that the classroom must __________ every day.

A. clean B.will clean

C. be cleaning D. be cleaned

Answer 1

【答案】D

【解析】

试题分析：句意：我们老师说教室必须每天要打扫。句中要用被动语态，即be+动词过去分词，而且句中有情态动词must，be动词用原形，故此题选D。