—Must we clean the classroom at once?—No, you . You can clean it after school.A. needn’t B. mustn’t C. must
—We’ll be back for our school’s ____anniversary ceremony(周年校庆). —I see. That means you’ll have a get-together with your classmates in_______ years.
I find this computer game ______ to play.
An old friend of my sister's always helps my brother andwithEnglish.
We could hear the frightened people's _____ in the accident.
______ earthquake on March 11th was ______ terrible disaster, making thousands of Japanese homeless.