—Whose soccer is it?— It be John's or Tong's. They both play soccer, don't they?A. must B. mustn't C. might
—Here ______ some books ______ you, Jim.—Thanks very much.
--- What’s your favourite day?--- ______.
______ are my pencils. ______ pencils are in the schoolbag.
—Is this ______ model plane?—No, it isn’t ______.
This is ______ art book. ______ book is Alan’s.