1 . Susan, don’t forget ________ the window. It’s too cold outside.

A．close

B．to close

C．closing

D．closed

2 . forget, the, don’t, door, to, close
________________________.

3 . 最后，别忘了加些盐。
Finally, don’t forget to ________ some ________.

4 . — Oh, no! I forgot ________ a stamp on the letter.
— Don’t worry. You can go to the post office and find it back.

A．stick

B．sticking

C．to stick

D．to sticking

5 . — Don’t forget ________ some beef when you go to the supermarket.
— OK, I won’t.

A．buy

B．buys

C．buying

D．to buy

6 . —Don’t forget ________ the bus at the fifth station along the line. You can find the Sports Centre on your right.
—OK, I won’t. Thank you.

A．getting on

B．getting off

C．to get on

D．to get off

7 . To live a low-carbon life, don’t forget ________ the lights when you leave the room.

A．to turn off

B．turning off

C．not to turn off

D．not turning off

8 . lock, don’t, to, the door, forget
_______________________________________________________________________________________.

9 . forget, keep, touch, to, in, your, parents, don’t, with
___________________________________________________________________.

10 . It is going to rain. Don’t forget ________ (take) an umbrella with you.