—Who do you guess I am? —Sorry，your name my mind．A．slipped B．has slipped

题型：不详难度：来源：

—Who do you guess I am?
—Sorry，your name my mind．

A．slipped

B．has slipped

C．had slipped

D．slips

答案

解析

考查时态。Slip my mind指忘记了，对现在产生了影响，即猜不出他是谁。A选项暗指现在想起来了。C，过去的过去，显然不符合题意。 D，显然没有B选项符合题意。

举一反三

Then I made a complaint to the manager and the problem soon．

A．was solved

B．had been solved

C．would solve

D．has been solved

题型：不详难度：| 查看答案

–Have you finished your university education?
-- Yes. I ________ in Shandong University for five years.

A．had studied

B．have studied

C．study

D．studied

题型：不详难度：| 查看答案

A single pipeline ___________ all the houses with water.

A．is served

B．serves

C．are serving

D．serve

题型：不详难度：| 查看答案

Miss Jones _______ music at Bardon School for five years when she was abroad and now she is an actress.

A．taught

B．has taught

C．had taught

D．has been teaching

题型：不详难度：| 查看答案

The hospital _________ well, where many wounded ________every day.

A．is operated; operation	B．operates; are operated on
C．operates; are operated	D．operates; operates on

题型：不详难度：| 查看答案