Be careful not to ______ your bike with so many heavy bags.
A. turn off B. take off C. fall off
I can't forget the time the earthquake happened in Yushu.
A. when B. which C. where
- May I go to the movies with you?
- I'm afraid not ， you have a ticket, because I have only one.
A． if B. unless C. though
Every year lots of trees to make our country more beautiful.
A. is planted B. are planted C. plant
- The girl __all her pocket money to the people in the Southwest for the serious drought(旱灾). - What a good girl!
A. took away B. gave up C. gave away
of the land is covered with trees and grass in Pingjiang, Yueyang.
A. Three fives B. Three fifths C. Three fifth
