-Let the driver ________．

-We can’t do that．He isn’t ________．

-Can I help you?

-No, thank you．________．

-I’m not good at maths．How about you?

-I’m ________．

---Let’s go swimming, shall we?

---______．

---Why shouldn’t I buy a new coat.

---I haven’t bought______for five years.

---Do you think we can get to the village before dark, Daddy?

---Yes, honey, ______ the car doesn’t break down．

-Can you ________ your husband’s steps on the floor?

-Yes. They are very familiar to me.

— I'll borrow this book from Betty．

— ________ take it without her permission．

— Why not go out for a walk? You have been working for several hours．

— ________．But I have to finish it before 12．