--- ________ have you been skating?

--- I've been skating for five hours.

1. A.
   How often
2. B.
   How soon
3. C.
   How long
4. D.
   How old

?______ have you been skating?

?I've been skating for five hours.

A. How often

B. How soon

C. How long

D. How old

--- ________ have you been skating?

--- I've been skating for five hours.

[　　]

--- Alice, how long ________?

--- I ________ for five hours.

1. A.
   did you skate; skated
2. B.
   have you been skating; have been skating
3. C.
   have you skating; have been skating
4. D.
   have you be skating; have skating

1.Shall we play basketball tomorrow?       A. For five hours

2. Have you ever been to an aquarium?      B. Yes, it is.

3. How long have you been skating?  C. Sorry, I’m busy tomorrow.

4.It’s windy today, isn’t it?         D. No, I haven’t

5.Let’s go shopping then.        E. OK. I’ll meet you at the shopping center at 10 o’clock