I think students _____ to do homework with friends.
A．should allowB．should be allowedC．were allowedD．must be allowing
B

試題分析：句意:我認(rèn)為學(xué)生們應(yīng)該被允許和朋友們一起做作業(yè)。根據(jù)句意可知，學(xué)生們應(yīng)該被允許這樣做，故應(yīng)該用被動語態(tài)。allow sb. to do sth.的意思是允許某人做某事，它的被動形式是sb. be allowed to do sth.。故應(yīng)選B。
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