31. Einstein didn’t care for money. Once he used a check _____ $1000 as a bookmark and then he lost it.
| A．for | B．of | C．about | D．To |
Washington, a state in the United States, was named _________ one of the greatest American presidents.
| A．in honour of | B．instead of |
| C．in favour of | D．by means of |
It is outer space might provide us with new energy sources.
| A．where | B．which | C．what | D．that |
If I enough money, I a DV before traveling.
| A．had ; would buy |
| B．had ; had bought |
| C．had had ; would have bought |
| D．would have ; would have bought |
——Didn’t you see Tom when he passed you?
——Sorry, I the kite in the sky.
| A．watched | B．was watching |
| C．had watched | D．have been watching |
When Fei Junlong and Nie Haisheng stepped out of the hall, all the cameras were on them, flashing quickly.
| A．pointed | B．aimed | C．focused | D．directed |