问题描述：
一个英语句子 请帮忙判断一下
I have a fish tank which there are 10 different fishes in it 还是
I have a fish tank which there are 10 different fishes in 要不要加 it
I have a fish tank in which there are 10 different fishes 这个句子对不对? 末尾要不要加it 为什么?
I have a fish tank which there are 10 different fishes in it 还是
I have a fish tank which there are 10 different fishes in 要不要加 it
I have a fish tank in which there are 10 different fishes 这个句子对不对? 末尾要不要加it 为什么?
问题解答：
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