You can keep the book until you ______ .
| A．have finished reading | B．finish to read |
| C．will finish reading | D．have finished to read |
--The weather has been very hot and dry.
--Yes. If it had rained even a drop, things would be much better now! And my vegetables .
| A．wouldn't die | B．didn't die |
| C．hadn't died | D．wouldn't have died |
You have to be accurate in this job，because a small mistake can make a big ________.
| A．difference | B．difficulty |
| C．trouble | D．change |
They had their hearingby the loud noise of machines.
| A．injured | B．wounded | C．hurt | D．harmed |
My sister met him at the cinema yesterday afternoon, so heyour lecture.
| A．couldn’t have attended | B．needn’t have attended |
| C．mustn’t have attended | D．shouldn’t have attended |
——Will you stay for lunch?
——Sorry，. My brother is coming to see me.
| A．I mustn’t | B．I can’t | C．I needn’t | D．I won’t |