1. (2022八下·龙湾期中) 用方框中所给单词或短语的适当形式填空。

for    humorous     perhaps      discover        Germany

1. （1） Scientists think there might be life on Mars. But so far, no one any life on it yet.
3. （2） Robert isboy in our class. He can always make us laugh.
5. （3） —Where is Bob? I can't find him anywhere?

   — he has gone to his grandparents' home.

7. （4） This summer Dora plans to visit her aunt in .
9. （5） Although the play lasted nearly three hours, we all spoke highly of it.