题目内容：

英语could you tell me__that prevents her from being as happy as before.
a.what it is
b.it is what
c.how it is
d.it is how

优质解答

答案是A吧选项是一个宾语从句,而后面的that prevents her from being as happy as before是宾语从句里面的表语从句,整个句子的意思是：你能告诉我什么阻止了她像原来那么开心了么（翻译的不大好啊）,也就是问的是“...