____ students have graduated from this school in the last twenty years.
| A．Tens of thousands of | B．Tens upon thousands of |
| C．Tens in thousands | D．Ten thousands of |
The boy is unlike his mother,_______ he?
| A．is |
| B．isn't |
| C．doesn't |
| D．does |
--- Alice, you feed the bird today,_9?
--- But I fed it yesterday.
| A．do you |
| B．will you |
| C．didn't you |
| D．don't you |
Bill's aim is to inform the viewers that cigarette advertising on TV is illegal, _______?
| A．isn't it |
| B．is it |
| C．isn't he |
| D．is he |
Let's go to the cinema, _______?
| A．shall we |
| B．will you |
| C．will we |
| D．don't we |
I'm late, _______ ?
| A．am I |
| B．am not I |
| C．aren't I |
| D．aren't you |