Three bridges ________ over the river five years ago.
| A．built | B．build |
| C．were built | D．are built |
—How many birds can you see in the trees?
—I can see _________ birds in them.
| A．hundreds of | B．five hundreds |
| C．hundred of | D．five hundreds of |
—Where is Miss Wang?
—She went to Hainan Island last week and will return _______ six days.
| A．ago | B．after | C．behind | D．in |
There will be _________ pollution this year than last year.
| A．fewer | B．much | C．less | D．many |
—Will people live to be 300 years old? —_________.
| A．No, they aren't |
| B．No, they won't |
| C．No, they don't |
| D．No, they can't |
There ______ an art show this Sunday.
| A．have |
| B．is going to have |
| C．is going to be |
| D．is going to hold |