—What ______the number of the students in your school?
—About four thousand and seven hundred. A number of them ______ from the countryside.
| A．is; are | B．is; is |
| C．are; is | D．are; are |
When we got to Yushu airport , we were told that they more than 500 people from the ruins(废墟) by earthquake.
A. has saved B. saved C. had saved
—Must I finish my homework right now?
—No, you.
A. needn’t B. may not C. mustn’t
The new-designed car is on show now. I wonder _____.
| A．how much it cost | B．how much did it cost |
| C．how much it costs | D．how much does it cost |
Since we ________ our homework now. Let’s have a rest.
| A．do | B．are doing | C．will do | D．have done |
The sports meeting ________ twice a year in our school.
| A．holds | B．is held | C．held | D．will be held |