3.. --- Smile is a magic thing.
--- Yes. It costs ______ but gives so much.
| A．many | B．few |
| C．much | D．little |
________ the story of The Little Prince is very simple, it warms people in many ways.
| A．When | B．Although | C．If | D．Because |
A: ________ will we know the results of the test?
B: In a week, I suppose.
| A．How much | B．How far | C．How soon | D．How long |
The scientists ________ on the new medicine for two years. They will succeed in no time.
| A．work | B．are working | C．have worked | D．will work |
That rude man seldom uses kind words, ________?
| A．does he | B．isn’t he | C．was he | D．hasn’t he |
The policeman caught the drunk driver, but he didn’t remember ________ the old lady.
| A．knock down | B．to knock down | C．knocked down | D．knocking down |