---What a heavy haze! The air pollution is terrible now.---It ________ worse unless we ________ action to protect the environment.
He knows _________ about computer than me. A. much B. more C. most
Mary didn’t go to John’s birthday party because she ________. A. wasn’t invited B. didn’t invite C. isn’t invited
Tony wants _______a job as a language teacher in China. A. to find B. finding C. find
—Do you know ________ she went to the movie last night? —On foot. A. when B. why C. how
—Let’s go dancing tonight.! —Sorry, I ________.I have to go to my guitar lesson. A. mustn’t B. needn’tC. can’t