After Jack had sent some e-mails, heworking on his project.
| A． |
had started |
B． |
has started |
C． |
started |
D． |
starts |
The campaign is trying to get the _____ across to young people that drugs are dangerous．
| A．lesson | B．topic | C．message | D．information |
Don’t be so discouraged．If you _____ such feelings, you will do better next time．
| A．carry on | B．get back | C．break down | D．put away |
These surveys indicate that many crimes go _____ by the police, mainly because not all
victims report them．
| A．to be unrecorded | B．unrecorded |
| C．to have been unrecorded | D．unrecording |
The wealth of a country should be measured _____ the wealth and happiness of its people as well as the material goods it can produce．
| A．in terms of | B．in line with | C．in regard with | D．in favour of |
As the saying goes, one is never too old to learn．After he _____, he will devote himself to gardening．
| A．retired | B．has retired | C．will retire | D．had retired |