Question

---Excuse me, whose Japanese book is this?
---It       be Tom ' s. In our class, only he is studying Japanese

1. A.
   must
2. B.
   can't
3. C.
   would

Answer 1

A
考查情态动词的用法。根据“only he is studying Japanese”可知这本日语本肯定是他的。must“一定”。