Don’t turn off the computer before closing all the programs, _____ you’ll have problems.
| A．but | B．and | C．so | D．or |
——We haven’t heard from Jane for a long time.
——What do you suppose_____to her.
| A．was happening | B．to happen |
| C．has happened | D．having happened |
Harry and his brother promised to work harder, .
| A．do they | B．don’t they | C．did they | D．didn’t they |
I don’t think he will come to the meeting,?
| A．will he | B．won’t he | C．do I | D．am I |
You’d like some coffee, ?
| A．weren’t you | B．wouldn’t you | C．hadn’t you | D．shouldn’t you |
me again before coming.
| A．Calling | B．To call | C．Do calling | D．Call |