---There people using the Internet in the world. Do you know how many people there are?
--- It’s hard to say, because _______people increasing.
A. is a number of; the number of; is
B. are a number of; a number; is
C. is the number of; a number of; are
At times, parents find it difficult __________ with their teenage children.
| A．talk | B．talked | C．talking | D．to talk |
We need __________ at the hotel for __________ because of the heavy snow.
| A．stay; short stay | B．staying; a short stay |
| C．to stay; short stay | D．to stay; a short stay |
— I think English is __________ unimportant subject.
— I don’t think so. It is __________ useful tool when we talk with foreigners.
| A．a; an | B．an; a | C．a; a | D．an; an |
— __________ do the new hair clips cost? —They are only ten yuan.
| A．How long | B．How much | C．How | D．What |
—Happy Halloween, Kitty! —_________________
| A．Yes, I am very happy. | B．Thanks, the same to you! |
| C．That’s all right. | D．Why do you say so? |