题目内容

I      my homework, I guess I can't join you.
A．don't finishB．didn't finishC．haven't finishedD．won't finish
A
考查现在完成时。句意为“我猜想我不能加入你们，因为到现在我还没有完成作业”，从过去时间一直持续到现在，用现在完成时态表示。故选C。
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