It was ____ the old worker came that we ____ the experiment.
| A．until; didn’t begin | B．not until; began |
| C．until; began | D．not until; didn’t begin |
The latest edition of Harry Porter has been a best-seller for 3 weeks_______.
| A．in a row | B．in the end | C．in turn | D．in advance |
Be calm, Madam, can you remember _____you had your mobile phone stolen?
| A．when was it that | B．that it was when |
| C．where it was that | D．it was where that |
Look at the trouble I am in! If only I _____ your advice.
| A．followed | B．would follow | C．had followed | D．should follow |
_________ that Tom got inside the room to see what was going on.
| A．So strangely did he feel | B．So strangely he felt |
| C．So strange did he feel | D．So strange he felt |
The hall of the school canone thousand people.
| A．sit | B．seat | C．be sat | D．be seated |