4．-I saw Lucy and her boyfriend in the park at nine yesterday evening．
-impossible．She          the Internet with me in my home then．（　�。�
A．surfedB．had surfedC．would surfD．was surfing

分析 ---昨晚九點我看見露西和她的男友在公園里．
---不可能．那時她正在我家和我一起上網(wǎng)．

解答 答案：D．根據(jù)impossible可知She          the Internet with me in my home then表示那時她正在我家和我一起上網(wǎng)，所以用過去進(jìn)行時，答案是D．其他選項的時態(tài)分別是A一般過去時；B過去完成時；C過去將來時．

點評 考查過去進(jìn)行時．
一般過去時表示過去某個時間里發(fā)生的動作或狀態(tài)；過去習(xí)慣性、經(jīng)常性的動作、行為，而過去進(jìn)行時表示過去某時正在進(jìn)行的狀態(tài)或動作．

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