You have already tried your best， so you _________ worry about the matter.
A. can't B. needn't C. mustn't D. couldn't
You'll do much better _________ you' re more careful with your spelling.
A. if B. before C. although D. unless
The teacher ____ his students to hand in their compositions before Friday.
A. said B. told C. had D. kept
Lao She is the____________of Tea House(茶馆).
A. doctor B. actor C. scientist D. writer
The sports meeting in our school now.
A.being held B.is having
C.is holding D.is being held
—Do you mind if I sit here? — . It’s for Mr. Brown.
A.Not at all B.Never mind
C.Better not D.Of course not
