______ to reach them on the phone, we sent an email instead.
| A．Fail | B．Failed |
| C．To fail | D．Having failed |
She wrote ______ second book, which turned out to be still popular with ______ young.
| A．the; the | B．a; 不填 | C．a; the | D．the; 不填 |
It was only after World War II had drawn to a close ______ in the United States.
| A．did the baby boom begin | B．that the baby boom began |
| C．when the baby boom began | D．then the baby boom began |
—Doug, where is your coach, Chow?
—See, he ______ by a group of journalists.
| A．is being interviewed | B．has been interviewed |
| C．is interviewing | D．has interviewed |
Many memories of old times were ______ by the conversation we had during the get-together.
| A．called on | B．called in |
| C．called up | D．called for |
The political situation in Libya will become even worse unless some measures ______.
| A．will be taken | B．are taken | C．have taken | D．are to take |