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课时作业(七)
Unit 2 Lessons 13、14
（20分钟 50分）
Ⅰ. 根据句意及汉语提示完成单词(10分)
1. He tried to keep it______ (秘密的)from his family.
2. The thieves replaced the original painting with a______ (复制品).
3. My son’s hobbies are playing______ (国际象棋)and swimming.
4. I made a______ (愚蠢的)mistake.
5. Do you think there will be______ (机器人)in people’s homes in twenty years?
