I think it is the boy that won the composition competition l

I think it is the boy that won the composition competition last week.怎么用it is
Who is Ann's best pupil?谁是安的最好的学生
I think it is the boy that won the composition competition last week.我认为是上周赢得作文比赛的那个男孩.
请问 think后的代词怎么用it 不用he吗?请详细说明.

如果你把it换成he的话,那个句子也是成立的,也对.但是这是个对话,改成he的话,你是在陈述一个事实,不是对上边问题的回答.
it is XXXXXX that 是强调句
that前得名词成分是强调的内容
此句应翻译为
-----安最好的学生是谁?
-----我感觉是那个作文比赛得冠军的那个就是.