—It's too hot. Would you mind my ________ the window?

—________. Do it as you like, please!

A. to open; OK

B. opening; Certainly not

C. closing; Of course

D. open; Good idea

—I usually go to bed late at night. And you?

—________.

A. So I do

B. So do I

C. So am I

D. So I am

I think ________ our duty to keep our environment clean and tidy.

A. that

B. this

C. it's

D. one

—________ can I keep this book?

—Two weeks, and you can renew it.

A. How long

B. How often

C. How far

D. How much

Mary decided ________ hard from then on.

A. to study

B. study

C. studying

D. studied

Look at your dirty shoes. You'd better ________ them right now.

A. washed

B. washing

C. wash

D. to wash

Oh, my God! I lost my key ________ the door.

A. at

B. of

C. to

D. about

I was born ________ September 8, 1993.

A. in

B. on

C. at

D. about

It's getting ________ now.

A. warmer and warmer

B. warm and warm

C. the warmer and the warmer

D. more and more warm

He is ________ of the two boys.

A. the fatter

B. fatter

C. fat

D. the fattest