30. Chinese must have the largest number of speakers, ________ ?
| A．mustn’t that | B．haven’t they |
| C．don’t they | D．doesn’t it |
After graduation she reached a point in her career_______ she needed to decide what to do.
| A．that |
| B．what |
| C．which |
| D．where |
The place_______ the bridge is supposed to be built should be _______the cross-river traffic is the heaviest．(2005．江苏)
| A．which; where |
| B．at which; which |
| C．at which; where |
| D．which; in which |
I am ashamed, sir, that I wasted a lot of hours _______I should have studied at school.
| A．which |
| B．as |
| C．once |
| D．when |
The taxi_______ a truck had knocked last night was destroyed.
| A．where |
| B．which |
| C．at which |
| D．into which |
These houses are sold at such a low price_______ people expected.
| A．like |
| B．as |
| C．that |
| D．which |