阅读下列短文，根据短文内容填空。在未给提示词的空白处仅填写一个适当的单词，在给出提示词的空白处用括号内所给词的正确形式填空。
No one knows exactly 【小题1】 the earth began. However, according to a widely accepted theory, the universe began 【小题2】 a “Big Bang”. Then the dust 【小题3】(settle) into a solid globe. As the earth cooled down, water began to appear on its surface. Many 【小题4】(science) believe that it was the presence of water that allowed the earth to dissolve 【小题5】(harm) gases and acids into oceans and seas, which made it possible for life to develop.
Millions of years later, the first small plants appeared on the surface of the water. Their development 【小题6】(follow) by early shellfish, all sorts of fish, green plants and land animals. Reptiles 【小题7】(produce) young generally by laying eggs while mammals gave birth to young baby animals. Dinosaurs existed on the earth for over 140 million years before they suddenly disappeared. The reason 【小题8】 they disappeared still remains a mystery.
Finally, humans appeared and spread all over the earth. But they are putting too much carbon dioxide into the atmosphere, which prevents heat from 【小题9】(escape) from the earth into space. As a result of this, people believe the earth may become too hot to live on. So 【小题10】 life will continue on the earth will depend on how this problem can be solved.

根据每小题的中文提示，用恰当的词组完成英文句子。
【小题1】越来越多的青年人开始关注野生动物的保护。
An increasing number of young people began to __________________the wildlife protection.
【小题2】我对这首歌很熟悉。
I ____________________ the song.
【小题3】春天来了，我们期待着一起去郊游。
Spring is coming. We __________________________ a school outing.
【小题4】不要忘记提醒Tom下午的会议。
Don’t forget to ____________________ this afternoon.
【小题5】现在这个年轻小伙子通过做销售谋生。
The young man ____________________ by being a salesman.
【小题6】John的父母在他小时就去世了，所以他是由奶奶抚养长大的。
John’s parents died when he was a little child, so he ______________________ by his grandma.
【小题7】她为自己的两个孩子都有音乐天赋而自豪。
She was proud that both her children _____________________.