-You look so worried, what’s wrong? -More and more people like me begin to worry about the ______ pollution after the haze (雾霾) appeared in Beijing and some other cities in China.
| A．water | B．air | C．noise | D．Soil |
The person ______ called yesterday wanted to buy the house.
A. whichB. who C. whom
In spring, a lot of young trees _______ in our city.
A. are planted
B. plant
C. has been planted
—Could you please tell me _______the park as soon as possible?
—By bus, I think.
A. how can I get to
B. how I can get to
C. when I can get to
______ he was exercising at the park yesterday morning, he found a purse under the tree.
A. While B. Before C. Though
I hear that another big library ______ in their school two years ago.
A. will be built B. is building C. was built