—Must we clean the classroom at once?—No, you . You can clean it after school.A. needn’t B. mustn’t C. must
Fast food _____ delicious,but it's bad for _____.
There snow and ice in Beijing this year.
He is have a trip to China Space Museum.
Look! The girl is dressing up _______ an old woman ______ a black coat.
_______does Sandy usually do __________ Thanksgiving Day?