____the bus until it has stopped.
| A．Not get off | B．Don’t get off | C．Didn’t get off | D．Get not off |
I still remember that terrible accident a few days ago, ____ more than 20 pupils were killed.
| A．where | B．that | C．on which | D．which |
The number of the workers in this factory300, that is to say,
it20%.
| A．has increased by; has increased to |
| B．have increased to; have increased by |
| C．has increased to; has increased by |
| D．have increased by; have increased to |
Many plants could move northward and toward the Pacific coast_____ rising temperatures and changes in rainfall．
| A．with regard to | B．in defense of |
| C．by means of | D．in reaction to |
In rugby（橄榄球），the ball is usually carried forward by players, ______kicking is permitted.
| A．so | B．in case | C．so that | D．though |
_______, he doesn’t study well.
| A．As he is clever | B．He is as clever |
| C．Clever as he is | D．As clever he is |