I’d like to ______ you _______ your success on the experiment.
| A．congratulations;on | B．congrgatulate;for |
| C．congratulations;for | D．congratulate; on |
The newlylearnt words will be impressed on us only if they are ________used in everyday communication．
| A．gradually | B．accurately |
| C．familiarly | D．frequently |
The car's________ has improved a lot since a new engine has been applied to it．
| A．character | B．performance |
| C．appearance | D．attraction |
How________ you expect to get something in return when you never willingly lend a hand to others?
| A．shall | B．can | C．should | D．dare |
--- Alice is moving to her new apartment next Saturday． --- I would be glad to help her，________ need some help．
| A．if she might | B．if she will |
| C．if she | D．should she |
________that the government can clear up official corruption，we are________ about the future of our country．
| A．Convinced；optimistic | B．Convincing；optimistic |
| C．Convinced；pessimistic | D．Convincing；pessimistic |