—Mrs. Wang was sent to teach English in a poor mountain village last year.—She said she would never forget some pleasant while working there.
— Did the police ask the guard what happened? — Yes, the guard told the police all _________ he knew. A. which B. that C. what
—We missed a chance to win a goal. —________! A. Well done B. Good luck C. What a pity
The kind of cloth feels ________and sells well. A. well B. good C. bad
You ________ worry about him. He will get well soon. A. needn’t B. can’t C. mustn’t