___ years ago, the population of China was over 20 million.
| A．Four hundreds |
| B．Four hundred |
| C．Four hundred of |
| D．Four hundreds of |
The only problem was there was nothing much to do in the evening read.
| A．and | B．so | C．then | D．but |
—What is your mother like? —
| A．Very heavy. | B．She likes playing volleyball |
| C．She liked running | D．Thanks |
Our teacher often keeps usclassroom every day,so we must keep our classroom .
| A．clean,clean | B．cleaning,cleaning |
| C．cleaning,clean | D．clean,cleaning |
I had useful umbrella when it rained.
| A．a | B．an | C．\ | D．the |
Monday afternoon we rode bicycle to Georgetown.
| A．On | B．In | C．At | D．Of |