Students taking the course _____to finish their homework with the help of computers．
A．a(chǎn)re encouragedB．have encouraged
C．a(chǎn)re encouragingD．had been encouraged
A
考查被動(dòng)語態(tài)。taking the course是現(xiàn)在分詞答語作后置定語，Students和encourage是動(dòng)賓關(guān)系，應(yīng)該用被動(dòng)語態(tài)，排除B、C；句中沒出現(xiàn)過去的動(dòng)作，不能用過去完成時(shí)。故選A。
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