—Yes, they a plan and did it.

A. were working out

B. worked out

C. are working out

D. have worked out

【答案】 B

【解析】【分析】考查动词的时态。句意：—比利和安娜最后找到了方法了吗？—是的，他们做好了计划并且找到了方法。根据and后的动词did可知，空格处也应该用一般过去时。故选B。

6．—When _______ you _______ your homework?

—I had finished it before he _______ back.

A. have; finished; came

B. have; finished; was coming

C. did; finish; came

D. did; finish; was coming

【答案】 C

【解析】【分析】考查时态。根据语境知，询问的是完成作业的时间，故用一般过去时。句意：——你什么时候完成的作业？——在他回来之前我就完成了。故选C。

7．—Your coat fits you well.

— Thank you. I it when I was on vacation.

A. have bought

B. buy

C. bought

【答案】 C

【解析】【分析】考查动词时态的用法。句意：-你的大衣非常适合你。-谢谢，我是在我出差的时候买的。根据when后的句子用的是一般过去时，所以这里也应该用一般过去时。故选C。

8．—There is someone knocking at the door.

—It must be the computer repairman. I him to come to fix my computer.

A. call

B. have called

C. called

D. will call

【答案】C

【解析】【分析】句意：——有人在敲门。——一定是电脑维修人员。我给他打电话来修理我的电脑。因此先打电话，然后维修人员来修理他，故此处用一般过去时，故此处为called，故选C。

【点评】本题考查时态辨析。以及call；have called；called；will call四种时态的用法和区