There are two dogs in my family. One is white,_____________ black.
– Which coat is _______, the black one or the gray one? -- The black one, of course.
—You speak Chinese very well._______ have you learnt , Amy? ---For two years.
– Must I return this book tomorrow? -- No, you _______. You can keep it until next week A can’tB. needn’t C. mustn’t D. shouldn’t
Kathy enjoys _______ mountains in autumn.
--___do you go and see your grandpa? –Once a week.