题目内容
【题目】Up to now, large quantities of food________to Africa to save the starving people.
A.is sent
B.has been sent
C.have been sent
D.are sent
【答案】C
【解析】考查主谓一致。句意:到目前为止,已有大量的粮食被送往非洲以拯救饥民。upto now通常与现在完成时连用;“largequantities of+名词”作主语时,谓语动词往往用复数形式。
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