-----You are going to visit the Great Wall,_____?
-----That’s right.
A. are you B. aren’t you C. don’t you
— Do you know ?
— Next Friday.
| A．when will he come back |
| B．when he came back |
| C．when did he come back |
| D．when he will come back |
This famous tower more than 300 years ago.
| A．build | B．builds |
| C．built | D．was built |
—What did you do for your mom on her birthday?
—I her a birthday cake.
| A．buy | B．bought |
| C．will buy | D．have bought |
Our teacher often tells usenough sleep every day.
| A．have | B．had | C．to have | D．having |
I in this school for three years.
| A．have studied | B．will study |
| C．am studying | D．studied |