問題詳情：
根據句意及漢語提示完成單詞
1. We should take an active part in _______（保護）the environment.
2. Which animals are in _______（危險）? Do you know, Mike?
3. They are doing a lot of _______（研究）to protect animals.
4. We hate war and love the _______（和平）.
5. His English teacher looks kind of _______（瘦的）.
【回答】
1. protecting take part in後接動詞-ing形式。
2. danger 介詞in後用名詞形式。
3. research 4. peace 5. thin
知識點：單詞拼寫
題型：單詞拼寫
