Ⅰ. 根据句意及首字母或汉语提示完成单词（10分）
1. You should e_____ your paper after you’ve finished it.
2. How do you e_____ the experiment?
3. He is in _____（前面）of me.
4. Don’t _____（混合） the water and oil together.
5. _____（加） 5 to 3 and you have 8.
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