----My sister is very upset today.
----It’s your fault. You ________ the bad news to her yesterday.
| A．should tell | B．should have told |
| C．shouldn’t have told | D．must tell |
If you keep on your research, you'll _____ the result in time.
| A．look out | B．find out | C．carry out | D．pick out |
I called the airline to _____ my flight reservation a week ago.
| A．confirm | B．admit | C．appoint | D．obtain |
My friend, Tom, left New York in 1976 and _____ since then.
| A．hadn't been heard of |
| B．hasn’t been heard of |
| C．hasn't heard of |
| D．hadn't heard of |
China _____ a sharp increase in the number of Social Networking Services users in the past years.
| A．has seen |
| B．saw |
| C．sees |
| D．was seen |
The two giant pandas are so much alike that it is impossible to ________ one from the other.
| A．discover | B．distinguish |
| C．realize | D．observe |