Sorry, madam. You’d better come tomorrow because it’s _____the visiting hours.
| A．during | B．at | C．beyond | D．before |
Where do you think ________ we can buy that bestseller?
| A．it is that | B．is it that |
| C．that | D．it |
There is no doubt that eating organic food will make you healthier, ________？
| A．will it | B．does it |
| C．is there | D．is it |
It was today's activity ________ let me know the importance of teamwork.
| A．where | B．which |
| C．that | D．what |
—Why wasn't John hired for the job?
—I don't know, but he ________.
| A．was | B．had been |
| C．should have | D．should have been |
She brought with her three friends, none of ______ I had ever met before.
| A．them | B．who |
| C．whom | D．these |