根据汉语提示和句意，用方框中所给短语的正确形式完成下面的句子。

give way to keep your balance lead to make a proposal turn to donate..to...make sure

（1）Not knowing what to do，we

turned to

turned to

our teacher.
不知道要做什么，我们求助于老师。
（2）A reward will be offered to the information

leading to

leading to

the arrest of the bank robber.
提供可以帮助逮捕银行劫匪的信息将会得到奖励。
（3）In Antarctica，when the long dark winter

gives way to

gives way to

spring，ice begins to melt.
在南极洲，当漫长黑暗的冬季过去，迎来春天的时候，冰开始融化了。
（4）If you want to learn skating，the most important thing for you is to learn to

keep your balance

keep your balance

.
如果你想学习滑冰，最重要的事情是学会保持平衡。
（5）To write a great news story，you have to

make sure

make sure

it is correct，relevant and fresh.
要写一篇好的新闻报道，你要确保它是正确的、切题的、新鲜的。
（6）The money

donated to

donated to

Project Hope is used to help the children in poor areas return to school.
捐赠给希望工程的钱被用来帮助贫困地区的孩子们回到学校。
（7）The head teacher

made a proposal

made a proposal

that all students make a social investigation on the cultural relics protection.
班主任提议所有学生对文化遗产保护作一个社会调查。