根据所给中文意思完成句子。
①骑车上学不仅有趣而且环保。
Cycling to school is both enjoyable and .
②难怪它看起来那么真实。
  it looks real.
③即使是最简单的日常活动也会对环境有重大的影响。
Even the simplest everyday activities can  to the environment.
④在把垃圾扔掉之前应该先将它们分类。
The waste should be sorted before it is 
⑤他已经浏览了图书馆里所有的书。
He has  all the books in the library.
⑥Mary 上个月顺便来看了我。
Mary   on me last month.
⑦和其他地方比，那通常非常热、充满阳光。
It's usually very hot and sunny    many other places.
⑧他们的家庭和我们的相似。
Their family is  ours.
⑨我们也挂起海报来告诉学生们怎样做是环保和节能。
We have also   posters to tell the other students how to be green and save energy.
⑩网络的发明帮助人们彼此交流。
The invention of the Internet helps people  each other.