People in Tibet are ________ than they used to be.
| A．better off | B．worse off | C．well off | D．badly off |
—Lost and Found Department.
—I lost my suitcase this morning. I wonder if it _____.
| A．has been turned in | B．had been turned in | C．has turned in | D．had turned in |
Lucy is a shy girl, but can you imagine ______ with the boss in Japanese?
| A．her quarrel | B．her to quarrel | C．her quarreling | D．she to quarrel |
Another type of pollution, ______ thermal pollution (热污染), is caused by fuel-burning.
| A．calling | B．called | C．to call | D．calls |
They had great difficulty ____ the people ____ in the fire.
| A．in rescue, trapping | B．to rescue, trapped |
| C．in rescuing, who trapping | D．rescuing, trapped |
It was midnight _____we reached the station.
| A．that | B．when | C．on which | D．which |