1. (2015九上·温州期末) 用方框中所给单词的适当形式填空。每词限用一次。

main          invite     natural      twelve       difficult

1. （1） I think  wonders are better than man-made ones because they are more amazing.

3. （2） My  birthday is coming, so my parents are preparing a party for me.

5. （3） Today people search for information  on the Internet instead of paper books.

7. （4） As her parents were both  to a meeting in the school, Linda was home alone.

9. （5）  are not excuses that stop you making progress.