--- What’s the number of students in your classroom? ---It’s about fifty. __________ of them are girls. A., Two third B. Two thirds C. Second third
—___________ —Fine, thank you. A. Welcome to China. B. How are you? C. How old are you?
—Hello! ________ you Miss Zhang? —Yes, I am. A. Are B. Is C. Am
Lucy is 7 years old. She is ________ to go to school. A. enough old B. young enough C. old enough
—We should eat more _______ food to keep our __________. A. health ; healthy B. healthily ;health C. healthy ;health
—Must we finish the project in a month? —No, you _______. A. mustn’t B. needn’t C. can’t