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37. Because she was very lazy, she failed her exam.
37. There will be fewer fish because people keep polluting the rivers.
38. The man is too poor so he can't buy a motorbike.
39. An English test will be done by the students next week.
40. That boy didn't try his best to study so he got ba marks.
41. Because we keep polluting the air, it'll affect our healthy badly.
