_____ three influenza type A virus subtypes(子类型) have been found in pigs.
| A．By far | B．As far as | C．So far | D．Till far |
—I’m sorry to keep you waiting for so long．I’ll make short work of my lunch．
—____．I’m not in a hurry．
| A．Take it easy | B．Take your time |
| C．Not at all | D．Don’t be nervous |
For a moment nothing happened．Then _____ that the war was over．
| A．came the news | B．the news came |
| C．did the news come | D．did come the news |
_____ my advice, you would not be in such a terrible situation now．
| A．Had you taken | B．If you take |
| C．Should you take | D．If you have taken |
My money _____,so I must go to the bank to withdraw some of my savings before I have none in hand．
| A．is running out | B．is being run out |
| C．ran out | D．has been run out of |
John was about to go back to sleep ______ suddenly his bedroom became as bright as day．
| A．after | B．when | C．while | D．until |