—Excuse me, whose Japanese book is this?
—It ________ be T
om's. In our class, only he is studying Japanese.
A．must B．can’t
C．would
—Excuse me, whose Japanese book is this?
—It ________ be Tom's. In our class, only he is studying Japanese.
A．must B．can’t
C．would
A 点拨：依题意知表肯定的推测，用must。