Last term our maths teacher set so difficult an examination problem _____ none of us worked out.
| A．that | B．as | C．so that | D．which |
Is this the factory you visited last week?
| A．that | B．the one | C．where | D．in which |
I have already told our class teacher that the windows of our classroom require .
| A．repairing | B．being repaired | C．to repair | D．repaired |
Can you tell me____ last year ?
| A．where does Mary work | B．where did Mary work |
| C．where Mary works | D．where Mary worked |
She won’t go to library tomorrow. ____
| A．So will I | B．Me, neither | C．Nor am I | D．Me, too |
As an Olympic volunteer，you should know how to ________ emergent cases.
| A．do with | B．think of | C．deal with | D．think about |