---_______ do they go to school ?
---At 6 o’clock .
A. When B. What C. Where
What do you do ________ Monday ?
A. in B. at C. on
He is as ________ as his father .
A. tall B. taller C. shorter
There ________ a book on the floor .
A. am B. is C. are
——Could you tell me?
——Glad to help.
| A．if I have been to the Great Wall |
| B．where did he study |
| C．how I can get to the post office |
| D．what’s your name |