______________, I think, and the problems could be settled.
| A．If you double your efforts | B．So long as you keep up your spirits |
| C．Making greater efforts | D．A bit more efforts |
Whenever he worked until midnight, he _____ drink some coffee to get refreshed．
| A．will | B．should | C．must | D．would |
Don't worry．_____ and we will complete the task you assigned to us．
| A．An hour later | B．In an hour |
| C．After an hour | D．Another hour |
A heated debate is under way on _____ Chinese media should use English terms like "GDP", "NBA" and "GSM"．
| A．which | B．that | C．whether | D．what |
East of Xiamen Island _____ several modern buildings, on whose tops we can see as far as Jinmen Island．
| A．lies | B．lay | C．stand | D．has |
Passengers on board aren't allowed _____ calls during take-off．
| A．making or receiving | B．to make or receive |
| C．to have made or received | D．having made or received |