--Whose book is this?--It _____ Amy's. Well, her name is on the cover of the book.A. must be B. can't be C. mustn't be
–Your English is good. --___________.
Please make a model plane and then ___________ it red.
This is our new English teacher, and ___________ name is Jane.
Mike and I ___________ classmates. We are in Class Two.
– Where is your Chinese teacher? --Sorry, I ___________ know.