More and more high－rise buildings have been built in big cities space.
| A．in search of | B．in place of | C．for lack of | D．for fear of |
Little _______he was saving every penny he earned in order to go to a fashion school.
| A．the parents did know | B．did the parents know |
| C．knew the parents | D．the parents knew |
The Shopping Festival in China falls on Nov. 11 _______millions of Chinese shoppers go to Tmall.com and Taobao.com.
| A．when | B．that | C．which | D．where |
If I had been a little more careful, I _______the wallet behind.
| A．won't leave | B．hadn't left | C．didn't leave | D．wouldn't have left |
Sally is always looking in the mirror, _______herself.
| A．enjoying | B．respecting | C．admiring | D．behaving |
_______we are worried about is that air pollution is becoming much heavier in Han Dan.
| A．It | B．What | C．Why | D．Which |