【題目】Now students in some schools ________ not to use mobile phones.

A. ask B. asked C. are asked D. were asked

【答案】C

【解析】

句意：現(xiàn)在一些學校的學生被要求不能使用手機。A. ask一般現(xiàn)在時的主動語態(tài)；B. asked一般過去時的主動語態(tài)；C. are asked一般現(xiàn)在時的被動語態(tài)；D. were asked一般過去時的被動語態(tài)。now（現(xiàn)在）是說當前的情況，句子不能用一般過去時來表達。故排除B和D選項；又因為學生是被要求不要去做某事，故用被動語態(tài)，被動語態(tài)的構成是be+動詞的過去分詞，故答案選C。

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