Could you tell me （） ？

A.May

B.Must

C.Nee

D.Could

Could you tell me how to _____my English？

A.alter

B.improve

C.change

A.at

B.on

C.for

D.with

A.You'd better buy a watch.

B.It's three thirty by my watch.

C.Can you see the clock?

A、Could you tell me whether I need to fill in the exchange memo

B、Could you tell me whether I can change foreign currency in other banks

C、Could you tell me whether you can accept traveler’s checks

A: Could you tell me where you were studying at that time？ B: ().

A、Oh, really？

B、Yes, I could.

C、enjoyed the game very much.

D、was studying at the University of Sydney

A.where you buy it

B.where do you buy it

C.where you bought it