一、单项选择题。在A、B、C、D中，选出可以填入空白处的最佳选项。（共15分）
1、---- What do you think of_______ tour around our city?
----- Oh, what_______ different Yangzhou! I like it very much.
A．the;不填 B．a；a C．the; a D．a；不填
2. —________is a boat ticket for children?
—How old is your child? It’s free for kids under three years old.
A. How long B. How much C. How often D. How soon
3. —________I do the laundry first, Mum?
—No, you ________. You can do your homework first.
A. Must; mustn’t B. Can; mustn’t C. Must; needn’t D. May; needn’t
