—I have trouble learning math this term.

—You should pay more _____ to your teacher's advice.

A. money 　　　 B. attention 　　 C. time

---- Why won’t you go to the movie with me, Gina?

---- Because I 　　 it twice.

　 A. see　 B. have seen　 C. saw D. will see

—Would you mind cleaning the blackboard?

—_____. I'll do it in a minute.

　 A .OK 　B.Yes, of Course 　C. No. not at all.

—Did you have a good time at the party?

—Yes. We sang ______danced until late at night.

　　 A. but　　　　　 B. if　　　　　　 C. and　　　 D. so

—What do you think of the two backpacks?

—______ of them are very nice.

A. Either　　　　 B. Both　　　　 C. Each　　　　　 D. All