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I go swimming alone this afternoon, Dad? No, you _____ . It is dangerous. A. may not B. mustn’t C. needn’t D. don’t c D B 4. ____ I visit Jack on Sunday? Yes, you _____ . A. Must。 may C. Need。 need. 5. ______ you turn down (調(diào)?。? your radio, please ? Yes, I can A. May B. Need C. Must D. Can 6. ____ I borrow your history book? Sure. Here you are . A. May B. Must C. Need D. Will B D A Task 3. Production 1. Mrs Li is 80 years old, so she ___ walk fast. A. could B. couldn’t C. can’t D. can Lucy and Lily sing this song last year? Yes, they __. A. Can, can B. Could, could C. Could, couldn’t D. Can can’t 3. My cousin is good at sports. He _____ very high. A. can jumps B. can’t jump C. cans jump