问题描述:
You need to know what the main idea of this passage is.语法对吗
是You need to know what the main idea of this passage is.还是You need to know what is the main idea of this passage .
是You need to know what the main idea of this passage is.还是You need to know what is the main idea of this passage .
问题解答:
我来补答展开全文阅读