() 3. As we’re students,we obey the school rules.

   A. can   B. may

   C. must   D. could

() 2. We use mobile phones when the plane takes off.

   A. may not   B. shouldn’t

   C. needn’t   D. mustn't

() 1. —Look at the man in the classroom!Is he Mr. Hand?-

一No,it be him. He's eating in the dining hall.

   A. can't   B. mustn't

   C. may not   D. needn’t

8. A year (divide) into twelve different star signs in some Western countries.

7. English (speak) by many people in the world.

6. The final result can (find) on our web site by the end of this week.

5. It is said that some people (send) to Mars in a few years.

4. Food cannot (keep) properly in a fridge at an unsuitable temperature.

3. We (ask) to help our parents do some housework every day.

2. Dear Eric,your room is too dirty. It should (clean) right away.