23. _______ the plane have taken off on time?
--- I’m afraid not. The fog was too thick then.
| A．Would | B．Should | C．Can | D．Must |
—Mike, what did our monitor say just now?
—Every boy and every girl as well as the teachers who to visit the museum asked to be at the school gate before 6:30 in the morning.
| A．is; is | B．are; are | C．is; are | D．are; is |
You may use my office as you like, you clean it up afterwards.
| A．as if | B．as well as | C．as soon as | D．so long as |
— Oh, I haven’t been to such a grand party.
— Come here, Mary. _______.
| A．Help yourself | B．Make yourself at home |
| C．Take your time | D．Behave yourself |
He was finally admitted to Beijing University. Never in all his life ______ so happy.
| A．he had felt | B．had he felt | C．he felt | D．did he feel |
More strict measures should be taken____more people are infected with the virus of H1N1 flu.
| A．so that | B．as if | C．in case | D．even if |