Ⅱ知识运用（20分）
A）.单项选择。（10分）
( )21.The Greens _____ China for seven years.
A.have come to B.have been to C.have come in D.have been in
( )22.—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
