那是你姐姐吗?A.Is the girl your brother? B.Is the girl your sister?
The girls are. A.listen to music B. listening to music C.listen music
—Whatthey doing? —They are flying kites. A.is B.are C.be
Wein the study. A.writing B.is writing C.are writing
—What are you? —I’m drawing a picture. A.doB.doing C.Does
—is he? —He is reading. A.What;do B.What;doing C.Where;doing