About 75% percent of the students can go swimming ____the rest can't.

A. while    B. and    C. so         D. or

A: (75)_____________________________?

B: Yes, please. I want a sweater for my daughter.

A: Look! Here are some sweaters for girls.

  (76)_____________________________?

B: Size M.

A: Do you like this red one?

B: Yes. My daughter likes red best.

  (77)________________________?

A: $25.

B (78)____________________.

Do you have any cheaper ones?

A: How about this one? It’s only$18.

B: Ok, I’ll take it. Here’s the money.(79)_________.

A: You’re welcome.