---I have finished my homework already, mum.
--- When ________ you ________ it?
A．did; finishedB．did; finish
C．have ; finishedD．were; finishing
B

試題分析：句意：媽媽，我已經(jīng)完成了我的作業(yè)。你什么時(shí)候做完的？答語(yǔ)中只是詢問過去的某個(gè)動(dòng)作什么時(shí)候完成的，所以一般過去時(shí)，故選B
點(diǎn)評(píng)：動(dòng)詞的時(shí)態(tài)是學(xué)習(xí)英語(yǔ)過程中非常重要的知識(shí)。而很多的題目，要通過上下文的語(yǔ)境判斷得知時(shí)態(tài)。一般過去時(shí)，表示過去發(fā)生的動(dòng)作，是最基本的時(shí)態(tài)，句中往往有yesterday,just now,ago等明確的時(shí)間狀語(yǔ)，本題不難，平時(shí)加強(qiáng)記憶，理解即可。
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