There_____ a hospital in my hometown fifty years ago.
—Must I take part in the activity?—No, you _______. You’re too young. You should look after yourself. A. mustn’t B. can’t C. don’t have to
Running every day ______ good for my health.A. is B. are C. am
Last month, I _______ the high jump in our school sports meet.A. took part in B. joined C. join
Sam spends two hours _______ his homework every day.A. to do B. doing C. do
—Would you mind ______ here?—I’m sorry. I won’t do it again.A. not smoking B. not smoke C. not to smoke