Excuse me, whose Japanese book is this?--Itbe Tom s. In our class, only he is studyin

--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

解析：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”。

和我的回答一样，看来我也对了

may i help you to _some___ fruit ?(some,any)

正规。较为书面。 =May I be helpful?= May I help you? 再如： It is useless. = It is of no use. It is important. = It is of importance.