人教版九年级下册英语Unit 13第3课时Section B 1a~1e课时作业本答案
1Section B 1a~1e第一题答案
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
2Section B 1a~1e第二题答案
3Section B 1a~1e第三题答案
4Section B 1a~1e第四题答案