WAS HE TIRED AFTER THE TRIP

4.Was he tired after the trip ? ………..V. Em hãy sắp xếp các câu bị xáo trộn dưới đây thành một bức thư hồn chỉnh:(2đ)-They produce a lot of smoke so we can not breath .-I suggest that the local authority should make them stop these polluting activities .-Dear Mr . President ,-Your truly ,-I write to you about the pollution made from the factory near my school.-They also make the river behind our school dirty with the chemical waste .-I look forward to seeing your reply .-Nguyen Le………