The flu is believed _____by viruses that like to reproduce in the cells inside the human nose and throat.
| A．causing | B．being caused | C．to be caused | D．to have caused |
To his surprise, his new play well ____ by the public in China, met a cold welcome abroad.
| A．received | B．accepted | C．accepting | D．receiving |
The newly-founded company is faced with lots of trouble, ____ the financial problem ia not the worst.
| A．which | B．of which | C．to whom | D．with which |
--- Excuse me, can you tell me the way to the bank?
---Oh, that's ____, it's either the second or the third road on the left.
| A．the difficult one | B．a hard one | C．an easy one | D．the very one |
I wonder ____ we can solve this hard problem.
| A．what else | B．how else | C．that | D．as if |
---Would you please give him the paper the moment he ____?
--- No problem.
| A．arrives | B．appearing | C．came | D．reaches |