—You look rather tired. _______stop to take a rest？
—All right. But I’ll have to work for a few more minutes.
A. Why not B. Why don’t
C. What aboutD. How about
In my senior high school, I will ______ than I did in my junior high school.
A. study more harder B. be hardworking
C. work harder D. study hard
—We can use Wechat（微信） to talk with each other online.
—Really? Could you please show me how ______it?
A. doing B. to doC. doD. does
—Mr. Smith, would you please speak a little more ________?
—Sorry! I thought you could follow me.
A. slowly B. politely
C. seriouslyD. clearly
—How clean the room is! —Yes，I am sure that someone _______ it.
A. cleansB. cleaned
C. has cleanedD. had cleaned
________ mothers can't come to the meeting because they have gone to Dalian.
A. Sally's and Jane B. Sally and Jane's
C. Sally and Janes' D. Sally’s and Jane's
