Ⅰ. 选词填空
1. You can’t(mightn’t, can’t) pick the ball up in football.
2. This must (can’t, must) be your dictionary, for your name is on the cover of it.
3. —I’m going to throw away all my old schoolbooks.
—But they may(need, may) be useful one day.
4. —I wonder what that noise was.
— It couldn’t(couldn’t, mustn’t) have been a firework because fireworks are forbidden.
5. Even a small personal computer can(can, should) store vast amounts of information.
6. —Vicki, will you translate this poem?
—Sure! But could (could, must) I have a dictionary to help me?
