—Which sweater can you choose, the blue one or the red one?—____ is OK, I think. Both go well with my trousers.
— 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