You have seen Helen in her office this morning because she’s been out of town for two weeks.
| A．needn’t | B．mustn’t |
| C．mightn’t | D．couldn’t |
I don’t believe these people have achieved success __________. They must have put much effort into their work.
| A．by coincidence | B．as usual | C．in particular | D．on purpose |
I failed in the final examination last term and only then_____ the importance of studies.
| A．I realized | B．I had realized | C．had I realized | D．did I realize |
It’s John’s birthday today. I wish I _____ her out to a superb restaurant for dinner, but I’m too busy recently.
| A．can take | B．take | C．could take | D．had taken |
__________ of time and energy has been spent in investigating the murder.
| A．A great deal | B．A good many | C．Large numbers | D．Large amounts |
It is _________ of him to tell lies, so don’t trust.
| A．normal | B．ordinary | C．common | D．typical |