— Micheal, do you know your father wants to buy a piano ? — Oh, I don’t know or not he’ll buy one. He didn’t tell me . A.what B.why C.whether
— If there are _____people driving, there will be ______air pollution. — Yes, the air will be fresher.
_______ Mary ______ John has been to China before, but they know a lot about it
Our music teacher has won the first prize in the competition. We’re very _______ him.
-- Hello! Would you like to go to the party with me tonight? --I’m sorry I can’t . Mother won’t ______me to go out in the evening.
They often leave the boy alone at home. They think that he’s old enough to look after _____.