Ⅰ.单项选择。（20分）
( )1.The Greens _____ China for seven years.
A.have come to B.have been to C.have come in D.have been in
( )2.—Could you tell me _____?
—Sorry, I don’t know.
A.where are my socks B.where can I find my socks
C.where my socks are D.where my socks put
( )3.It’s necessary for you _____ exercise every day.
A.taking B.to take C.take D.takes
