当你想问别人她是谁时,你可以说:A.Who’s she? B.Who are you? C.Who is he?
()I _____the name of a friend. A. write B. writing C. am write
()There is _____ big bird in the tree. A. a B. an C. the
()Why are you _____ ? A. laugh B. laughing C. sing
()Why do you _____cups on your heads? A. have B. having C. had
()It’s easy _____make mistakes with English words. A. to B. for C. of