--- How many students are there in your school?
--- I don’t know, but I’m sure ______ number of the students in my school _____ larger than that in yours.
| A．a, is | B．a, are |
| C．the, is | D．the, are |
I like swimming better than climbing, because I think climbing is ________ swimming.
| A．not as exciting as | B．the most exciting |
| C．as more exciting than | D．not as more exciting as |
We haven’t got any coffee. Let’s have tea __________.
| A．either | B．however |
| C．instead | D．instead of |
Don’t say bad words ______ your friends. It’s ________.
| A．about, polite | B．to, impolite |
| C．at, polite | D．about, impolite |
____________ careful you are, _____________ mistakes you’ll make.
| A．The more, the fewer | B．The less, the fewer |
| C．The more, the less | D．The less, the less |