( )is very interesting to swim in the river,but it'sdangerous.Athis b that c it d he
问题描述:
( )is very interesting to swim in the river,but it'sdangerous.Athis b that c it d he
答
C
It is +adj.+ to do sth 固定用法
答
( )is very interesting to swim in the river,but it'sdangerous.Athis b that c it d he
Cit 这里做形式主语 to swim in the river才是真正主语
答
C
答
c it 做 形式 主语
答
答案 C it 形式主语,代之 to swim in the river