1 . Mom always tells me to ________ junk food. She doesn’t think it’s healthy.

A．shut off

B．keep away from

C．leave out

2 . —To save energy, we should ________ the electricity when we don’t use it.
—I agree. You are really a greener person.

A．shut up

B．shut off

C．take away

3 . —Li Lei, please get the chalk ________ the blackboard after class.
—OK. We’ll keep it clean, Ms. Wang.

A．to take off

B．cleaned off

C．to shut off

D．gotten off

4 . Remember to ______________ the lights when you leave the classroom.（关闭；停止运转）

5 . — To save energy, we should ________ the electricity when we don’t use it.
— I agree. You are really a green person.

A．take off

B．shut off

C．take away

6 . —To save energy, we ought to ________ the electricity when we don’t use it.
—I couldn’t agree more. You are such a green person.

A．take off

B．shut off

C．get off

7 . —Mommy, the plane for China is going to ________. I have to go.
—Take care. Call me when you get there, no matter what the time is.

A．kick off

B．shut off

C．take off

D．clean off

8 . We should ________ our hats when we watch the national flag-raising ceremony (仪式).

A．put off

B．take off

C．shut off

D．turn off

9 . To be polite, you’d better ________ your shoes after you enter the room.

A．clean off

B．put off

C．shut off

D．take off

10 . 用所给词的适当形式填空。每词限用一次。

shut off     support     nod     examine     behave

1. Mrs Brown ______ when her students greeted her.
2. The lights must ______ when we leave the classroom.
3. I believe John ______ well next time.
4. His parents ______ many of his races since he became a runner on his school team.
5. John ______ what was wrong with his computer when I came back home.