With so much noise of the traffic, I couldn’t ______ and do my research work．
| A．put down | B．settle down | C．break down | D．take down |
—is it that is troubling Mary?
—Working out the maths problem．
| A．What | B．How | C．Why | D．Which |
—The fishermen should have been warned of the bad weather．
—，but they didn’t listen to it．
| A．So were they | B．Yes．they were |
| C．So should they | D．Yes．they should |
I received his mother’s telephone call at eleven． that he was badly hurt in an accident yesterday．
| A．Then did I know | B．Only then I knew |
| C．Only then did I know | D．Only then knew I |
We should be able to do the job for you quickly， you give us all the necessary information．
| A．as if | B．or else | C．provided that | D．in case |
—Can the project be finished as planned?
—Sure，it completed in time，we’ll work two more hours a day．
| A．having got | B．getting | C．to get | D．get |