– Must I return this book tomorrow?-- No, you _______. You can keep it until next weekA can’t B. needn’tC. mustn’t D. shouldn’t
-You have got three dictionaries, don’t you ? - Yes, I bought one.______ two were presents from my parents.
My parents come from Hunan, but ____ of them likes hot food.
I don’t know when my father _____ back, but I’ll let you know when he ___back.
The children have six ______ classes every weekday.
We are not allowed ______ in our school.