试题 试卷
题型：单选题 题类：常考题 难易度：普通
仁爱科普版九年级上Unit 2 Saving the earth. Topic 1 Pollution has causestoo many problems.同步练习1
— I don't think so. Now the young the old can speak some English.
- Yes, Mom! Nothing is impossible ______ you put your heart into it!
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