. The country has already sent up three unmanned spacecraft, the most recent ______ at the end of last March.
| A．has been launched | B．having been launched |
| C．being launched | D．to be launched |
A man is being questioned on the __________ murder last night.
| A．advised | B．attended |
| C．attempted | D．admitted |
—Has Mary come back yet?
—Yes. She has got many books from her elder schoolmates, which __________ 1，000.
| A．add up | B．add up to |
| C．add to | D．add |
What do you think of his suggestion __________ we organize a football club?
| A．which | B．whether |
| C．that | D．what |
The students __________ in character are quite similar in their interests.
| A．differ | B．different |
| C．difference | D．who is different |
—Excuse me, what time __________ the train __________ ？
—At 8：10 tomorrow morning.
A. does ；pull out B. do ；pull in