There are so many foggy days these days. We all wonder .
A. how is the air polluted
B. why the air is polluted seriously
C. what are the real reasons
相关试题
—I hear there are many animals in the park．Let’s go to the zoo．
—________．
| A．Right |
| B．That’s all right |
| C．That’s right |
| D．All right |
Don’t________trees and we should love nature（自然）．
| A．cut up |
| B．cut down |
| C．cut off |
| D．cut out |
—________do they go to the zoo？
—Because they want to see pandas．
| A．When |
| B．Why |
| C．What |
| D．How |
粤公网安备 44130202000953号