The moon is the earth
| A．as big as forty-nine times. | B．forty-nine times bigger than |
| C．as big as onethird | D．one-third the size of |
With more and more forests _____, many animals are facing the danger of dying out．
| A．to destroy | B．destroying |
| C．destroyed | D．to be destoyed |
As we all know, China is a developing country, _____ attracting more and more foreigners．
| A．the one | B．one | C．it | D．that |
The beautiful town, _____ we spent our summer vacation last year , lies at the foot of a mountain．
| A．whose | B．which | C．where | D．why |
—It’s such a beautiful day． Why not have a picnic with us?
—_____． But I have a lot of homework to do．
| A．Don’t mention it | B．It’s up to you |
| C．I have no time | D．I’d love to |
—Listen! There is a knock on the door． Who _____ it be?
—It must be Jack． Just now I sent for him．
| A．shall | B．can | C．must | D．might |