—People in Southwest China have never experienced _____ natural disaster．
—Exactly．Let's do our bit to help them．
| A．a more severe | B．the most severe |
| C．the more severe | D．a most severe |
_ I was_______ the point of telephoning him when his letter arrived.
| A．in | B．to | C．at | D．on |
_ Finding a job in such a big company has always been_______ his widest dreams.
| A．under | B．over | C．above | D．beyond |
_A container weighs more after air is put in, ____proves that air has weight.
| A．as | B．it | C．that | D．which |
_)I had not believed in falling in love with somebody at first sight_______I met David on Valentine’s Day three years ago.
| A．when | B．unless | C．if | D．before |
_—Did you visit the Summer Palace?
—No.We could have, _______we spent too much time shopping.
A.so B but C.ecause D.though