---__________ did Tara learn ice skating?
---For three years.
A. How long B. How old C. How often
Only when the work is done ________ be able to go back home.
| A．you have | B．you will |
| C．will you | D．have you |
All the donated money should be made full use ___the homeless people Ya'an city of Sichuan province.
| A．of helping | B．to help |
| C．of to help | D．to helping |
．Who is knocking at the door?
——It ______ Mr. Black, because he_______Washington.
| A．can't be;has gone to | B．may be;has been to |
| C．must’t be;has gone to | D．may be;went |
It’s raining heavily .But ___ of the farmers are picking up
the apples ___ the trees.
| A．every, in | B．none , in |
| C．none, on | D．some,in |
I often see her _the room. I saw her _the room again just now.
| A．clean;clean | B．clean;cleaning |
| C．cleaning;clean | D．cleaning; cleaning |