—Shall I lock the lab now before I go home ?
—__________ . I’ll check it myself later.
| A．Don’t bother | B．No problem | C．No hurry | D．Go ahead |
We will debate the subject_____ late when we have enough time.
| A．in vain | B．at length | C．at last | D．in force |
While watching television, __________.
| A．the doorbell rang | B．the doorbell rings |
| C．we heard the doorbell ring | D．we heard the doorbell rings |
John, look at the time. ___________ you play the piano at such a late hour?
| A．Must | B．Can | C．May | D．Need |
_____in a well—known university is what everybody wishes for.
| A．Educated | B．Being educated | C．To educate | D．Educating |
“You can’t catch me!” Janet shouted, __________ away.
| A．run | B．running | C．to run | D．ran |