Why is it that when you miss someone so much that your heart is ready to disintegrate是什么意思

Why is it that when you miss someone so much that your heart is ready to disintegrate是什么意思 That is why,This is why,It is why的区别 what i do not know is that why...是不是应该改为is it that why啊 可不可以这样说It is that why...或者It is why ... When I try to understand —— that prevents so many Americans frombeing as happy as one might except,it seems to me that there are 2 sidesA.what it is B.why it is请问为什么是a啊 That's why it is called:The Present是什么意思? that is why it's called the present. it is no wonder 后用why还是that? why do you think that it is true? why is that you donn't care about it? 英语翻译Why are you so sure that it is a That is black when it is clean and white when it is dirty It is why…和That is why… 的区别（说明+例子） 34-Why is it _____ he works so hard,only to maintain his living barely?-A.-when -B.- as -C.-that -D.-which why it is 还是why is it 下面两段首字母填空怎么填?Someone says:Time is money,but I think time is e____more important than money.Why?Because when money is spent,we can get it back.However,when time is gone,it will never r____.That's why we must't w____time.It go So why is that why is that?