—Have you worked here since you graduated?
—No, I ____________at a factory in Beijing for six years.
| A．would work | B．have worked | C．had worked | D．worked |
The new government decided to encourage industries ______ technology, which was ______ biology.
| A．basing on; linked to | B．being based on; linking with |
| C．based on; linked with | D．to base on; linked |
A couple of young people went _____ the ship ______ their stolen necklace worth $5000.
| A．abroad; searching for | B．aboard; in search of |
| C．board; in their search of | D．broad; searched for |
Last week the staff made______ suggestions, but unluckily they were just ______ impractical by the manager.
| A．dozen of; dismissed for | B．many dozens of; dismissed from |
| C．two dozen; being dismissed as | D．dozens of; dismissed as |
______that blood diseases are going to continue, we’ll have to______ them.
| A．Assumed; doing research at | B．Assuming; do research on |
| C．Assuming; do research for | D．Being assumed; do research on |
When Nancy was at college, she ______ three foreign languages. But I am surprised to find that she ______ all except a few words of each.
| A．spoke; had forgotten | B．had spoken; had forgotten |
| C．spoke; has forgotten | D．had spoken; has forgotten |