教我几道英语题目the computer is expensive.-----

教我几道英语题目
the computer is expensive.
_____ ______expensive computer is!教教我感叹句因怎么做
mr black went out in a hurry yesterday.(同义句）
mr black _____ _____ yesterday.
Mary has learned chinese since she come to china.(划线提问）【since she come to china划线】
_____ _____ has Mary learned chinese?
Thank you.You've been ______(help).

What an expensive computer it is!(你少打了it)
或How expensive the computer is!
规则：what +主语+ 代词+动词(包含be动词）
How +adj/adv +主语+动词
What a hot day(it is)!=How hot the day is!
What a beautiful shirt you wear (it is)!=How beautiful the shirt you wear is!
2.left hurriedly 匆匆离去
3.How long
4.helpful