-_____the population of China?
-_______over 1,300,000,000.
| A．How many are,They are | B．How’s,It’s |
| C．What’s, It’s | D．How much is,It’s |
We were deeply impressed by the schools ______ we had visited in this city.
| A．which | B．who | C．where | D．what |
—What should I do, doctor?
—You should take more exercise ______ healthy.
| A．to keep | B．keep | C．keeping | D．kept |
—Maggie, why did you take a bus today?
—Oh, I forgot to tell you about that. My bicycle ______ yesterday.
| A．lost | B．is lost | C．was lost | D．has lost |
—Someone is knocking at the door. Who ______ it be?
—It ______ be Victor. He went to London yesterday.
| A．can; mustn't | B．can; can't |
| C．will; must | D．may; needn't |
When the firemen arrived, the fire had been ______
| A．put off | B．put down | C．put away | D．put out. |