1.the Great Canyon is 1.6 kilometers deep on average.(对1.6 k

1.the Great Canyon is 1.6 kilometers deep on average.(对1.6 kilometers 提问）
（ ）（ ）is the Grand Canyon on average?
2.Dangerous driving causes many accidents(改为被动语态）
Many accidents( )( )by dangerous driving.
3.David is 13 years old and Kerry ia 13 years old,too.(同义句）
（ ）is as（ ）as David.
4.They have already cleaned the classroom.(改为一般疑问句）
（ ）they cleaned the classroom（
答案要说明理由
未完、待续···
5.Tom's parents often complain about his carelessness.(同义句）
Tom's parents( )never pleased( )him.
6.The question are very easy,The children can understand them.(合并为一句)
The question are( )( )for the children to understand .
7.Jim left Chongqing 3 days ago because of his new work.(改为同义句)
Jim has( )( )from Chongqing for 3 days because of his new work.
8.What did Peter say just now?
He said he( )很高兴参观 Hua Guo Mountain in Lianyungang.
9.We have fine weather today.(改为感叹句）
( )( )weather we have today!
10.Didn't they tell you about it?(改为被动语态）
( )you( )about it?
11.Will the 29th Olympic Games be held in Beijing?Could you thll me )(合并成含有宾语从句的复合句）
Could you tell me ( )the 29th Olympic Games ( )be held in Beijing?
12.The dictionary cost me fifty yuan.(同义句）
I ( )( )the dictionary( )fifty yuan
13.She has made up her mind that she won't do that again.
She has ( )( )to do that anain.