As a surgeon, I cannot any mistakes; it would be dangerous for the patient.
| A．appreciate | B．remove | C．offer | D．afford |
—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 |
A warm thought suddenly came to me _______ I might substitute the hero to buy some flowers for his mother’s 60th birthday. 
| A．if | B．when | C．that | D．which |