—You look tired. —Yes. I _____ non-stop until twelve o’clock. A．hasn’t been w

题型：不详难度：来源：

—You look tired.
—Yes. I _____ non-stop until twelve o’clock.

A．hasn’t been working

B．wasn’t working

C．was working

D．didn’t work

答案

解析

本题考查时态。Until twelve o’clock 说明工作已经完成，应用过去时态；同时说明在12点以前动作持续进行，故应用进行时态。答案为B。

举一反三

25. He is one of the old scientists who ______nothing about his personal income and fame .

A．cares

B．care

C．is caring

D．are caring

题型：不详难度：| 查看答案

2. ---- English, as a living language, ________ all the time.
---- Right. Who knows what it will be like in the years to come?

A．will change

B．is changing

C．was changing

D．has changed

题型：不详难度：| 查看答案

28. The farm as well as its neighboring hills we once spent so much time ____ on a new look as recently as last year.

A．on having taken

B．has taken

C．on has taken

D．having taken

题型：不详难度：| 查看答案

29. If city noises____from increasing, people___shout to be heard even at the dinner table 20 years from now.

A．are not kept; will have to	B．are not kept; have to
C．do not kept; will have to	D．do not kept; have to

题型：不详难度：| 查看答案

I don" t want to be a person that always cries, but today apparently ____．

A．I am

B．I will

C．I have

D．I did

题型：不详难度：| 查看答案