He devoted most of his time to researching into space, believing his hard work would ______ sooner or later.
| A．pay back | B．pay for | C．pay off | D．pay up |
The trade union intended to call on the workers to go on strike ______ the government’s limitation on exports.
| A．in memory of | B．in honor of | C．in need of | D．in response to |
By the time you come back, your aunt ______ for Nanjing to attend a meeting.
| A．will leave | B．leaves | C．left | D．will have left |
______ frightened us ______ a tiger turned up suddenly in front of us.
| A． What; was that | B．What; was | C．It; that was | D．It was; that |
The boys ______ the newspaper on the ground and began to read the news and articles in it.
| A．extended | B．expanded | C．spread | D．stretched |
Now that she is out of a job, Lucy ______ going back to school, but she hasn’t decided yet.
| A．had considered | B．is going to consider |
| C．has been considering | D．considered |