【題目】Don’t arrive late for class. You must ____________.

A.on time.B.be on time.C.are on time.

【答案】B

【解析】

句意:上課不要遲到了。你必須準時到。

考查介詞短語。on time按時,準時,是一個介詞短語,不能在句中作謂語,應(yīng)在be動詞后作表語,排除A;空前must是情態(tài)動詞,后面跟動詞原形,C不對。故選B

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