_______ on rescuing her sick son, the poor mother has been w

这句英语请变中文,
But the most interesting phase of the rescuing is undoubtedly the CPR,a treatment judged as very beneficial by all those who have received it.

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.

it's proving difficult___the men.1 for rescuing 2 to rescuing 3 to rescue 4 in rescuing
选择哪一个,及分别说出每个为什么对与错,