He rarely switches on to hear any of the classical music he claims to be so keen ____.
| A．to | B．on | C．by | D．into |
Look! The ground is wet. It must have rained last night, ________？
| A．hasn't it | B．hadn't it |
| C．mustn't it | D．didn't it |
I told Mom that not everyone could manage to have 3 meals on time everyday, ________？
| A．could he | B．didn't I |
| C．didn't she | D．could they |
No sooner ________ down on bed ________ the telephone rang.
| A．had he lain; than | B．had he lied; when |
| C．did he lie; than | D．had he laid; before |
Honey, you ________ alcohol for they have stopped drinking.
| A．may not have bought | B．mustn't have bought |
| C．can't have bought | D．needn't have bought |
—What courses are you going to learn next term?
—I don't know.But it's about time ________ on something.
| A．I'd decide | B．I decided |
| C．I decide | D．I'm deciding |