—How many workers are there in your factory, Mr Brown?
—________ workers in our factory _________2000.
| A．The number of; are | B．The number of; is |
| C．A number of; are | D．A number of; is |
— Excuse me. Is the library open all day?
—. Only from 8 a.m. to 4 p.m..
| A．Yes, of course | B．That's right | C．Sorry, I'm not sure | D．Sorry, I'm afraid not |
Keep off the drugs（毒品）, you and your family will be in great danger?
| A．and | B．or | C．but | D．so |
— May I come in? I'm sorry I am late.
— Come in, please. But could you please tell me ?
| A．how do you come to school | B．what were you doing then |
| C．who you talked with | D．why you are late again |
Jane is one of the students in the class have ever been to China.
| A．who | B．whose | C．which | D．whom |
“Don't to strangers on your way to and from school”, mother often to me.
| A．speak; says | B．speak; tells | C．talk; speaks | D．talk; tells |