—You seem to have had that car for years.
---Yes, I should sell it ____ it still runs.
| A．before | B．during | C．until | D．while |
My new shirt doesn’t fit me well, so I’ll take it back to the store______sold it.
| A．where | B．when | C．that | D．in which |
. — You must obey every word of mine!
— _____ I don’t?
| A．How if | B．What if | C．Even if | D．Only if |
16. The river,______the bank are covered with trees, is very long.
| A．whose | B．which | C．of which | D．which of |
The way she dealt with the problem is quite different _______ her parents were used to.
| A．from which | B．in what | C．in which | D．from what |
While building a tunnel through the mountain, ________ .
| A．an underground lake was discovered |
| B．there was an underground lake discovered |
| C．a lake was discovered underground |
| D．the workers discovered an underground lake |