Mike often exercises ______ half an hour in the morning.
| A．at | B．of | C．with | D．for |
----- What color is your jacket?
-----__________.
| A．It’s green. |
| B．It’s a green. |
| C．It’s green jacket. |
| D．It’s a jacket. |
----- What’s this?
----- ____ a ruler.
| A．It | B．It’s |
| C．This | D．This’s |
----- What’s that in English?
-----It’s ____ ID card.
| A．a | B．an |
| C．the | D．/ |
--- How ____ you, Bill?
-----I ____ fine, thanks!
| A．is； am | B．are； is |
| C．are； am | D．is； are |
Only then_______ his mistakes.
| A．he realize |
| B．did he realized |
| C．did he realize |
| D．he realized |