1. 用方框中所给单词或短语的适当形式填空, 每个单词或短语限用一次。

nature, discuss, fantastic, join in, millions of

1. （1） I hope that everyone will be able to the fun.
3. （2） To tell you the truth, I don't want to join in the .
5. （3） Needless to say, Mount Tai is a famous wonder.
7. （4） In fact, smoking takes the lives of people in the world every year.
9. （5） I think the ancient wonders are than the modern ones.