_____ life exists on any other planet in the solar system still remains a question.
| A．Why | B．Whether | C．How | D．Where |
I don’t think that your lecture _______ the audience, for they appeared quite puzzled.
| A．got across to | B．got close to | C．got away with | D．got along with |
—Can I use the telephone on the table, sir? 
—Under no circumstances _________ to use the telephone in the office for personal affairs.
| A．anyone is allowed | B．nobody is allowed |
| C．is anyone allowed | D．is nobody allowed |
.—He didn’t feel a bit nervous when ________.
—No. He’d had a lot of time ________ for it after all.
| A．interviewing; to prepare | B．interviewed; to prepare |
| C．interviewing; preparing | D．being interviewed; preparing |
How long do you think _________ the computer company launches a new model?
| A．it will be before | B．will it be until | C．will it be when | D．it will be that |
Miss Li _ as a secretary for five years in the company, and now she is general manager of it.
| A．serves | B．served | C．had served | D．has served |