--What time do you go to bed?   --           about a quarter to ten.

— What time do you usually get up in the morning?

— _ six o'clock.

A. On 　 B. For 　 C. In 　 D. At

What time do you expect her________?

A. arrive  B. is arriving   C. arriving    D. to arrive

-- What time do you expect me back, Mum?

-- Say, ______half an hour.

　 A. at　　　　 B. before　　　　　　 C. in　　　　　　　 D. for