I’m sorry I can’t join you.  I __________ my homework. 
A．haven’tfinishedB．didn’tfinish
C．won’tfinishD．don’tfinish
A

試題分析：考察時(shí)態(tài)。句意：對(duì)不起，我不能和你一起了。我還沒(méi)有完成我的家庭作業(yè)。本題應(yīng)該使用現(xiàn)在完成時(shí)，表示過(guò)去發(fā)生的事情對(duì)現(xiàn)在的影響。根據(jù)前半句可知我無(wú)法和你們一起是因?yàn)槲覜](méi)有完成我的家庭作業(yè)。故A正確。
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