请读懂下列句子，用下列方框中所给短语的正确形式填空。look back on

请读懂下列句子，用下列方框中所给短语的正确形式填空。

look back on    be supposed to    be hard on    make the most of   in the long term

小题1:Wang Bin's parents __________________ him, demanding that he should only do the reading
instead of surfing the Internet even in summer holidays.
小题2:I like to _________________ my high-school days, which are the happiest in my life.
小题3:We should cut our expense ___________________.
小题4:What's the matter with you? You_____________________ be happy.
小题5:He ______________________ every opportunity he could get and was successful.