Go up the ladders什么意思

4个英语句型转换.
1.Be careful,don't fall off the ladders.[同义句]
Be careful,don't ___________ ___________ ___________ the ladders.
2.Please call the manager.[同义句]
Please ___________ a telephone call ___________ the manager.
3.The man [standing at the window] is waiting for you.括号部分提问
___________ ___________ is waiting for ___________
4.We helped his with his study many times.[同义句]
We helped him with his study ___________ ___________ ___________ .

会算么?好难啊
Two ladders,one 30 feet long,the other 20 feet long are on horizontal ground beteen two vertical walls and lie from one corner to the opposite wall.They cross at 10 feet above the ground.How far apart or the walls?

英语翻译
Today,stepladders carry labels several inches long that warn,among other things,that you might -- surprise!-- fall off.
怎么翻译 什么句子结构

几道初二被动语态英语题目.The firemen are using long ladders for rescuing people in tall buildings
1Liquids can ___________(turn) into gases if their temperatures __________(make) hot enough.2 The next morning they _________(find) that some trees ____________(blow) down during the night.3 The headmaster praised Ben for his honesty.Ben _______ ________ for his honesty______ the headmaster.
4、The firemen are using long ladders for rescuing people in tall buildings.
Long ladders _________ ________ _________for rescuing people in tall buildings by the firemen.
5、 Mother will buy Jack a new shirt.
A new shirt ______ _______ _________ ________ Jack by Mother.
6、The adults tell the children not to swim in that deep river.
The children_________ __________ not to swim in that deep river.

when you get to the top of the green ladders,go down .when you get to the bo

英语翻译
You can see the diagonal marks of the ladders in the plaster on the inside walls.

It can take as long as eight days to rig up rope ladders and to establish supply bases before a descent can be made into a very deep cave.
it 指什么,这是什么类型的形式主语
不用it怎么翻译?before a descent can be made into a very deep cave can take as long as eight days to rig up rope ladders and to establish supply bases
make a descent into ...这是词组吗，
句子成分是什么这句？