The workers ___ busily when the boss came to look for something she ___ in the office.
| A．had worked; had left | B．were working; had left | C．working; had left | D．had worked; left |
The moment we heard the news of the earthquake, we began to ________ the work to rescue those who were trapped in the building.
| A．set off | B．set down |
| C．set aside | D．set about |
.________ twice, the postman refused to deliver our letters unless we chained our dog.
| A．Being bitten | B．Bitten |
| C．Having bitten | D．To be bitten |
Now that we’ve discussed our problem, are people happy with the decisions ________?
| A．taking | B．take |
| C．taken | D．to take |
At the age of 29, Dave was a worker, ________ in a small apartment near Boston and ________ what to do about his future.
| A．living; wondering | B．lived; wondering |
| C．lived; wondered | D．living; wondered |
When we visited my old family home, memory came ________ back.
| A．flooding | B．to flood |
| C．flood | D．flooded |