I’m not sure _______my friend can come here or not tomorrow.A. whether B. when C. if
—___________—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 oldB. young enoughC. old enough
—We should eat more _______ food to keep our __________.A. health ; healthyB. healthily ;healthC. healthy ;health
—Must we finish the project in a month?—No, you _______.A. mustn’t B. needn’t C. can’t