The government placed _____ on the numbers of foreign cars that could be imported.
| A．limitations | B．restraint | C．requirements | D．restrictions |
----Hi, Carol, how was your trip to Disney World?
----Hi, we ______a good time there.
| A．are having | B．have had | C．had | D．have |
I hope that you ______a good time this evening.
| A．have | B．are having | C．will have | D．had |
----Have you ever ______Lintong to see the Terra Cotta Warriors?
----Yes, I have.
| A．went to | B．gone to | C．been in | D．been to |
We must do something to stop people from ______.
| A．to throw litter about | B．to throw litter into |
| C．throwing litter about | D．throwing litter into |
Our teacher did what she could ______us with English.
| A．help | B．helped | C．helping | D．to help |