They have always treated us with open hands and we must be generous ________.
| A．in return | B．in addition | C．in vain | D．in case |
—How many times have you been to China?
—In fact, it is the first time I __________ here.
| A．was | B．am | C．had been | D．have been |
—I missed the first part of the film. It was really a pity.
—You __________ home half an hour earlier.
| A．should go | B．must have gone | C．should leave | D．should have left |
His father told me that he __________ for the United States three days __________.
| A．has left; ago | B．had left; ago | C．left; ago | D．had left; before |
He made a mistake, but he corrected the situation __________ it got worse.
| A．until | B．when | C．before | D．as |
Iraq has __________ too many wars since 1990, making his people __________ a lot.
| A．got through; pay | B．looked through; face |
| C．gone through; suffer | D．passed through; destroy |