Did you hear__knock at the door?-No,I__to my MP3.

问题描述:

Did you hear__knock at the door?-No,I__to my MP3.
A.anybody;listened B.anybody;was listening
C.somebody;listened D.somebody;was listening

答案:【 B.anybody;was listening】
当时你有没有听到有人敲门?不,我当时正在听MP3
疑问句要用anybody,肯定句才有somebody.
我当时正在听MP3,表示过去正在进行的动作所以要用过去进行时态was listening
【Me YC真诚为你解答此题,我做这题时也选B,但参考答案是D。。。。。。参考答案错了把