. If the weather had been better, we could have had a picnic. But it ________ all day.
| A．rained | B．has rained |
| C．rains | D．is raining |
Many of the scientists and engineers are judged _______ how great their achievements are.
| A．in time of | B．in ways of | C．in view of | D．in terms of |
— I will come to attend your lecture at 10:00 tomorrow.
— I’m sorry, by then my lecture will have ended and I _____ in my office.
| A．am working | B．will work | C．will be working | D．will have worked |
— Will you go to the World Expo in Shanghai by bullet train after the Examination?
—_______ I may go by air.
| A．Why not? | B．Not really. | C．How come? | D．Oh, great. |
There are two main sets of Games — the Winter and the Summer Olympics, and both are held every four years on a _________ basis.
| A．valuable | B．former | C．regular | D．swift |
The __________ to the rocket going into space went wrong, and as a result it exploded and fell into the sea.
| A．mark | B．sign | C．symbol | D．signal |