—Who’s singing in the garden?—It _____be Mr. Brown. He always practices singing at this time.A. must B. can’t C. need
--- I will have a Math test tomorrow. --- _______.
--- Can you give me _______ minutes?
--- _______ going fishing? --- That’s a good idea.
Can you _______ it _______ English?
There are six floors _______ our school buildings. Our classroom is _______ the third floor.