We can have ___ blue sky if we create ___ less polluted world.
| A．a. a | B．a, the | C．the, a | D．the, the |
–Hi , Ann. How can you improve your English so much?
--Oh, nothing difficult. The you work at it, the progress you will make.
| A．harder, more | B．more hardly, more |
| C．hardlier, greater | D．harder, great |
—Mum, I think I’m to get back to school.
—Not really, my dear. You’d better at home for another day or two.
| A．so well; stay | B．well enough; to stay |
| C．well enough; stay | D．good enough; to stay |
Would you mind me how this physics problem ?
| A．telling; to solve | B．telling; solve |
| C．to tell; to solve | D．to tell; solve |
. —I think Mr Zhang may be in his office.
—No, he be there. I saw him just now.
| A．needn’t; left | B．mustn’t; leaving |
| C．can’t; leave | D．shouldn’t; leave |
—What do you think of the new bridge?
—I have never seen _____ before.
| A．so a long one | B．so long one |
| C．such a long one | D．a such long one |