1. (2022八下·海安期中) 根据句意选用正确单词并以其适当形式填空。

polite      you       Germany       fly      forty

1. （1） The books about cooking are those .
3. （2） —What is the number of your to Shanghai?

   —I haven't known yet. I have just booked one on the website.

5. （3） We shouldn't speak to the teachers and parents .
7. （4） My aunt looks very young in her .
9. （5） —Did you enjoy trip in Hong Kong?

   —Yes, we had lots of fun.