1.It is s______ of you to think that everyone in the world is kind to you.
silly
后面说的全世界人人都对你有仁爱之心必然是一种愚蠢的想法,
2.Under the help of the Internet,we can learn what other people around the world are doing.
Under the help of the Internet 改为 With the help of the Internet
With the help of ...在...的帮助下
3.I have never been to an aquarium.
Neither haven't I
Neither haven't I 两个否定,改为 Neither have I
4.It was five months since the Smiths moved to England.
It was five months 改为 It is five months（也可以用完成时态 has been,但不如现在是更常用）,
因为搬迁到英格兰是过去,而从那时候以来一直到现在已经过去五个月了.
5.I think different from him.
I think it different from him
think 后缺宾语,添加 it 与 different 构成复合宾语
6.I was too asleep to watch the end of show.
asleep 改为 sleepy
asleep 意思是睡熟的,sleepy 困倦的
7.I don't like Beijing Opera,so does my mother
so 改为 neither
so 表示肯定,neither表示否定,正好对应前面的 don't like
翻译
人们应当学会怎样保护自己
People should learn how to protect themselves.