The twin sisters have learned a lot ________ they came to China.

A. when B. after

C. since D. as soon as

---The students of Class 7 are going to the seaside this weekend.

---Remember _____ them not to keep _______ alone in the sea. It’s dangerous.

A. telling; swimming B. telling; to swim

C. to tell; to swim D. to tell; swimming

— Does your mother often _______ to you?

— Yes. But she always ________ the same words.

A. talk; say B. talk; says

C. speak; tells D. talk; speaks

To make our city more beautiful, rubbish _________ into the river.

A. needn’t be thrown B. can’t thrown

C. mustn’t be thrown D. may not thrown

In the past few years there ________ great changes in my hometown.

A. has been B. have been

C. have had D. were

______ twenty minutes enough for you to get to the station?

A. Are B. Do

C. Is D. Does

—_________ nice trip to travel by air!

—__________.

A. How a; So it is. B. What a; So it is.

C. How ; So is it. D. What ; So is it.

—May I come in? I’m sorry I’m late.

— Come in, please. But could you please tell me _______________?

A. why you are late again B. what were you doing then

C. who you talked with D. how do you come to school

I like reading in the city library ________ I often lose myself in a world of good books on weekends.

A. which B. that

C. / D. where

--- Would you mind my singing here?

--- _______. I hear that you have been made _____the China’s Got Talent.

A. Certainly not; to take part in B. Of course not; take part in

C. Yes. Go ahead; to join in D. Better not; join