——Do you know what your problem is?
—Yes. I always overwork to ________ for lost time.
| A．sit up | B．keep up |
| C．make up | D．hold up |
---- How long ____ at this job?
---- Since 1990.
| A．were you employed | B．have you been employed |
| C．had you been employed | D．will you be employed |
---- Do you know our hometown at all?
---- No, this is the first time I ____ here.
| A．was | B．have been | C．came | D．am coming |
They won the game, _______ made their team leader proud of them.
| A．that | B．which | C．it | D．all this |
The first thing ________ we should do is to master the basic grammar.
| A．which | B．that | C．as | D．of which |
Diamond, _________, is the hardest of all materials.
| A．like we know | B．since we know | C．we know | D．as we know |