the most difficult thing is determining how sleep function are. 这句话错在哪里 为什么 谢谢
问题描述：
the most difficult thing is determining how sleep function are. 这句话错在哪里 为什么 谢谢
答
首字母大写
tings 要加s
is后改为how to determine the sleep functions.
最后,The most difficult things is that how to determine the sleep functions.