After the big earthquake in Chile, there were about 300 aftershocks in the nearby area, ______ over 200 were quite damaging.
| A．which | B．of which | C．during which | D．whose |
The black horse is___________ of the pair.
| A．the strongest | B．the stronger |
| C．the strong | D．quite strong |
I coutdn't have got to the meeting on time____________ an earlier train.
| A．if I had not caught | B．unless I had caugh |
| C．if ! did not catch | D．unless I caugh |
________ is quite natural,a beginner can't read the books written in English very quickly.
| A．Which | B．As | C．What | D．It |
__________ it rain, the crops_____________.
| A．Shall,would be saved | B．Should, would be saved |
| C．Would, should be safe | D．Were, might be safe |
--You forgot your keys when you left home in the morning.
--Good heavens,___________.
| A．so did I. | B．so I did. | C．so you did. | D．so did you. |