当你相助你的朋友生日快乐时,你应该说A. Happy birthday! B. Nice to meet you .
——it have two legs? ——Yes,it does. A.DoesB.DoC.Are
This iselephant. A.a B.an C.the
Lookmy toy. A.in B.atC.of
Thisa dog. A.isB.are C.am
The beara mouth. A.haveB.has C.is