He________sleep，although he tried to，when he got on such a hunt for an idea until he had caught it. (2013·湖南，32)
| A．wouldn’t | B．shouldn’t |
| C．couldn’t | D．mustn’t |
He began to take political science_____ only when he left school.
| A．strictly | B．truly | C．carefully | D．seriously |
I can't say which wine is best-it's a (n) ___ of personal taste.
| A．affair | B．event | C．matter | D．variety |
---May I ask for a leave,sir?
---sorry,the meeting _____ no absence.
| A．admits | B．admits of | C．admits to | D．admits about |
At the beginning of class, the noise of desks _____ could be heard outside the classroom.
| A．opened and closed | B．to be opened and closed |
| C．being opened and closed | D．to open and close |
This washing machine is environmentally friendly because it uses _____water and electricity than _ ___models.
| A．less; older | B．less; elder | C．fewer; older | D．fewer; elder |