32．They said his lack____experience could lead to a disaster and he should ask for nec- essary help．
| A．of | B．in | C．for | D．To |
Mike ________ his car, for he came to work by bus this morning
| A．can have found | B．could have found |
| C．can’t have found | D．mustn’t have found |
______ is known to all，the Amber Room belongs to the Russians.
| A．As | B．Which | C．It | D．What |
_____ these experiments were successfully completed would we think of
going into humans.
| A．If only | B．So that | C．Only if | D．Even if |
According to the rules and regulations, all payments _____ be made in cash in the shopping center.
| A．shall | B．can | C．must | D．should |
A huge amount of environmental damage has been _____ by the destruction of the rainforests.
| A．brought up | B．brought about | C．brought down | D．brought out |