Our lab is on the third _____ of a six—______ building.
| A．floor; story | B．floors; stories | C．ground; flat | D．apartment; ground |
--- Don’t bother to buy me an air ticket. I’ve got one.
--- ______ Why didn’t you tell me earlier? I’ve got one, too.
| A．Good luck! | B．You have? |
| C．It’s no surprise. | D．Don’t mention it. |
The parents can’t explain _______ makes their children so fascinated with their teacher’s lessons.
| A．that what it is | B．what it is that |
| C．what is it that | D．that what is it |
He is, how shall I _________, not exactly fat but rather well-built.
| A．put it | B．make it | C．mean it | D．get it |
When the policeman stopped us, we all looked questioningly at him, ________.
| A．nervously and puzzled | B．nervous and puzzling |
| C．nervous and puzzled | D．nervously and puzzling |
Tom, clean up the broken glass _________ someone walks on it.
| A．since | B．when | C．before | D．as |