—What a drive! I’m tired out.

—No wonder! You have been driving for such a long time ________ taking a break.

A. byB. withoutC. throughD. in

The 24 solar terms(二十四节气) ________ a great effect on Chinese people’s lives for thousands of years.

A. have hadB. hadC. haveD. had had

________ as a volunteer teacher in Tibet for a year, Linda has become more experienced.

A. To workB. WorkingC. Having workedD. Worked

Yesterday I went back to my primary school, ________ my teachers and I recalled our good old days.

A. whichB. thatC. whenD. where

Li Hua’s parents hold different opinions on whether they should have ________ child.

A. anotherB. otherC. othersD. the other

Social media, like WeChat, ________ the way of communication nowadays.

A. are changingB. change

C. changedD. were changing

In big cities, young people often go to cafés ________ with friends.

A. relaxedB. relaxC. to relaxD. relaxing

I usually sleep with the window open ________ it is really cold.

A. ifB. unlessC. now thatD. in case

Beijing’s new international airport ________ into use in 2019, according to the spokesperson.

A. was putB. will putC. has putD. will be put

I had to catch my flight. That was ________ I left Tom’s party so early yesterday.

A. whatB. howC. whyD. when