Between 1918 and 1938, many new stations were constructed,__________ was designed by an architect named Charles Holden.
| A．the most famous of which |
| B．the most famous of them |
| C．the most famous of whom |
| D．and the most famous of which |
One of our rules is that every student wear the school uniform while at school.
| A．might | B．could | C．shall | D．will |
The workers insist that the company should take measures to improve their working condition.
| A．attractive | B．effective | C．impressive | D．conservative |
Ifunsolved, the problem of food safety may lead to more serious results.
| A．having left | B．to leave | C．left | D．leaving |
—How's your project work going, Jack?
—. I'm half finished with it.
| A．So far so good | B．It's up to you | C．Never mind | D．Forget it |
—Tom almost ran into a pole yesterday while driving on the highway.
—I suppose he too fast.
| A．had driven | B．was driving | C．drives | D．has driven |