there is a chance which I can join it 这句话的which 为什么不能使用 而必须用

there is a chance which I can join it 这句话的which 为什么不能使用 而必须用 there is a great chance that he will这里为什么用that而不用which there is a possibility that it will rain.中为什么用that而不用which 和 为什么 this is the place which I have ever visited 的关联词要用which而 It's a country which is old这句话对不对.. it is a place that i will never forget.为什么不是用in which. Is there anything which I can do to help you i can not say which wine is best -it is a (n)()pf personal t I wear a coat.It is warm.We can plant trees.Which season is I wear a coat.it's warm.we can plant trees.which season is i 这句话分析以下为什么不用THAT,而用which? 英语翻译I need you to give me a chance which can treat you sweat