I request that you __________ the task on time.
A．finishedB．should finishC．could finishD．would finish
B

試題分析：考查虛擬語(yǔ)氣; 主句的謂語(yǔ)是：request賓語(yǔ)從句的謂語(yǔ)是（should）do，句意是：我要求你準(zhǔn)時(shí)完成任務(wù)。省略了should，選B。
點(diǎn)評(píng)：除了request，還有suggest，order，recommend，propose，insist等詞后面的賓語(yǔ)從句的謂語(yǔ)是（should）do。
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