—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
--Your schoolbag is nice. --_______________.
The pencil box is_______.
--Is this______ruler? ---No. ________is in the schoolbag.
--Is this your key? --_________.
She is my______,my mother’s sister.