六．情态动词

1. You            tell him the good news because he has already known it.

A) needn’t     B) may not     C) mustn’t   D) can’t

2. Nowadays even a small personal computer ______ store huge amounts of information.

A) must       B) need                C) should            D) can

3. Before boarding on the plane everyone __________go through the security check (安检). （13黄浦二模à10年中考真题改编）[来

源A) need           B) may               C) can                D) must

4. You          either set the alarm clock or ask for a morning call. （13普陀二模）

A) should           B) may         C) ought to          D) must