--- Why should we plant more trees to protect the environment?
--- Because trees can stop the wind from ________ the earth _________.
A. washing ;away
B. blowing; away
C. changing ;into
--- Have you found your lost book_____?
--- No, I haven’t.
A. already B. yet C. Still
Because of the 2008 Olympic, great changes have _________ in Beijing.
A. taken place B. improved C. happened
Don’t give up, __________ you will succeed one day.
A. or B. but C. And
--- Where is LiLy? I can’t find her.
--- She __________ a disabled children’s home to help them.
A. has been to
B. has gone to
C. has been away
--- How long have you worked in this town?
--- ________ October 21, 2001.
A. Since B. For C. On
