-____you interrupt now? Can’t you see I’m on the phone?
-Sorry Sir, but it’s urgent.
| A．Can | B．Should | C．Must | D．Would |
—Hi，Torry，can I use your computer for a while this afternoon?
—Sorry.________.
| A．It’s repaired | B．It has been repaired |
| C．It’s being repaired | D．It had been repaired |
People who often stay up too late are more likely to die of heart disease，________ a study.
| A．with the help of | B．because of | C．according to | D．as a result |
He picked up an envelope________50 dollars in it.
| A．containing | B．contained | C．which contains | D．which was contained |
I didn’t hear the phone. I ________ asleep.
| A．must be | B．must have been | C．should be | D．should have been |
—Does he know how to work out the problem?
—Yes，he has ________ a good idea to solve it.
| A．caught up with | B．kept up with | C．come up with | D．put up with |