人教版九年级下册英语Unit 13第3课时Section B 1a～1e课时作业本详细解答过程和答案
Section B 1a～1e第1题详细解答过程和答案1、cut down
2、made a difference
3、had heard of
4、 is harmful to
5、is good for
6、took part in
7、had taken action
8、pay for
Section B 1a～1e第2题详细解答过程和答案
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Section B 1a～1e第3题详细解答过程和答案
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Section B 1a～1e第4题详细解答过程和答案
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