地球上南北极圈的纬度是南北纬66°34′,它是由
I Lingling. A. am B. is C. are
Are there ______ interesting places ? A.some B.an C.any
They are your ______. A.parent B.parents C.a parent
They are ______ to make a plan. A.go B.to C.going
I will go to Beijing ___ March 15. A.on B.in C.at