Напишите письмо по : last week l had a task to write an essay "an ideal environment for happy living".of course there are a lot of ecological problems in my city. for example, we have a lot of exhaust fumes in the air, almost no green trees in the streets. but it's hard for me to think of an ideal environment. what is your idea of "an ideal environment"? are there a lot of environmental problems in the place where you live? what are they? which should be solved as soon as possible?