--- _______ will the fog and haze(雾霾) last? ---I have no idea. There is no sign of an end.
| A．How long | B．How soon |
| C．How far | D．How often |
Something is wrong with my PDA.I will get it ___________ .
A. repairB. repairing
C. to repair D. repaired
The woman you saw at the park ________ be Jane. She is at work now.
| A．must | B．might | C．can | D．can't |
They ________ next Monday.
| A．gets married | B．got married |
| C．gotten married | D．will get married |
Teenagers should try_______best to get good grades and not let their parents or teachers _________
| A．them, down | B．their ,down |
| C．them’s , happy | D．their, happy |
The woman _______ is singing in the hall is our teacher.
| A．what | B．which | C．who | D．whom |