1. (2021九上·温州开学考) 用方框中所给单词的适当形式填空，每词限用一次，每空不限一词。

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1. （1） Tigers wait until it is dark, then they go out for their food.
3. （2） Qomolangma, the world's highest mountain, is about 8, 848 metres sea level.
5. （3） Jack hurt his leg during school hiking, so he couldn't walk much
7. （4） Three astronauts entered the Tianhe module one by one. It was the first time to enter our space station passed away at the age of 91.
9. （5） It's sad to hear that Yuan Longping, one of China's modern .