1 . Uncle Wang ________ the electricity and water in his house before taking a holiday.

A．went off

B．cleaned off

C．shut off

D．put off

2 . As soon as the passengers got on the plane, they ________ their mobile phones at once. (关闭)

3 . Peter always remembers to ________ the light off when he leaves the room.

4 . —Excuse me, sir. The plane will take off soon. Could you please ________ your mobile phone?
—Sorry, I will do it right now.

A．shut off

B．take away

C．set up

5 . —The government is trying to protect the environment now.

—Yeah. It is reported that some factories will be ________ soon.

A．set off

B．shut off

C．taken off

D．turned off

6 . As soon as the passengers got on the plane, they ________ off their mobile phones at once.

7 . —When I am too tired to think, I like to lie down and ________ my brain.
—Sounds great. I’d like to have a try next time.

A．cheer up

B．give up

C．get up

D．shut off

9 . 外出度假前请一定要确保关掉家里的煤气和电源。
Please make sure to ________ the gas and electricity in the house before leaving for a holiday.

10 . If you want to be a greener person, you should ________ the light when leaving a room.

A．fall off

B．go off

C．put off

D．shut off