. ------Don’t put the waste on the ground. ------Oh, I’m very sor

题型：不详难度：来源：

. ------Don’t put the waste on the ground.
------Oh, I’m very sorry. I ____ the dustbin there.

A．don’t see

B．isn’t seeing

C．didn’t see

D．haven’t seen

答案

解析

考查时态。“不要把垃圾扔在地上。”“噢，非常对不起。我没看到那个垃圾箱。”答语指的是“刚才”没看到垃圾箱，应该用过去时。故选C。

举一反三

.---- It is high time I _______ to school.I have to go now
---- See you!
---- See you!

A．had gone

B．went

C．would go

D．should have gone

题型：不详难度：| 查看答案

By the time the tornado ended, more than 700 people _________.

A．have killed

B．had been killed

C．were killed

D．had killed

题型：不详难度：| 查看答案

If you plant watermelon seeds in the spring, you __ fresh watermelon in the fall.

A．eat

B．would eat

C．have eaten

D．will be eating

题型：不详难度：| 查看答案

. Had I known about this computer program, a huge amount of time and energy __ .

A．would have been saved	B．had been saved
C．will be saved	D．was saved

题型：不详难度：| 查看答案

For many years, people __ electric ears. However, making them has been more difficult than predicted.

A．had dreamed of

B．have dreamed of

C．dreamed of

D．dream of

题型：不详难度：| 查看答案