--- Mum , can I watch TV for a while ?

--- As long as your homework _____, you can.

A.finishes B. will be finished

C. is finished D. will finish

 

C

【解析】

試題分析：句意：--媽媽，我能看會(huì)兒電視嗎？--一旦你的作業(yè)寫完了，你就可以看電視了。作業(yè)是動(dòng)作的承受者，所以用被動(dòng)語態(tài)，在條件狀語從句中，如果兩個(gè)動(dòng)作都沒有發(fā)生，為了區(qū)別動(dòng)作的前后關(guān)系，先發(fā)生的用一般現(xiàn)在時(shí)態(tài)，后發(fā)生的用一般將來時(shí)態(tài)，即主將從現(xiàn)。作業(yè)被完成是從句，故用一般現(xiàn)在時(shí)，故選C.

考點(diǎn)：考查一般現(xiàn)在時(shí)的被動(dòng)語態(tài)。

 

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