题目内容

根据句意,用所给词的正确形式填空。
1. We were all surprised at his _____ (arrive). We thought he wouldn't come.
2. I told myself _____  (calm) down since was still alive.
3. We must prevent people _____ (cut) down trees.
4. What a _____  (sun) day it is today!
5. Everyone should know the _____ (important) of protecting the wildlife.
1. arrival   2. to calm   3. cutting   4. sunny  5. importance

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