You can borrow my car ________ you promise not to drive too fast.
| A．unless | B．even if |
| C．in case | D．as long as |
The young teacher treated the naughty boy kindly，but her patience _______at last.
| A．used up |
| B．went down |
| C．got in |
| D．gave out |
The comments the expert made______ stock-market bothered him greatly，________him
not fall asleep all night.
| A．be concerned；which made |
| B．concerned；making |
| C．concerning；making |
| D．to be concerning；made |
There has been a(n)________of gloom in the factory since it was announced that it would
be closed.
| A．air |
| B．atmosphere |
| C．condition |
| D．heart |
The doctor thought the medicine was perfect，but it didn't ________the disease at all.
| A．work out |
| B．solve |
| C．do |
| D．have an effect on |
When will the new driving laws come into________？
| A．use |
| B．effect |
| C．service |
| D．existence |