the back garden of our house contains a leaving --very pleasant to sit on in summer.

问题描述:

the back garden of our house contains a leaving --very pleasant to sit on in summer.
which is
which it is
it is
where it is
这四个选项应该选哪一个?为什么?能具体分析一下吗?谢谢!

选which it is吧
which指代aleaving,就是it is very pleasant to sit on the leaving
如果选 which is 就是the leaving is very pleasant to seat on
it不是连词
where 不和on 连用
好久不摸英语了,自己的想法,