Present simple или present perfect continious i'm glad to hear that you are enjoying yourself in australia. things at home are the same as usual. your father 1) has been (work.} very hard. susan 2) /pass) her driving test. alex 3) /write) for weeks, probably because he ) very hard for his exams. uncle tom 5) ) a shed in the garden. i think it will be ready next month. mr brown /feel) well recently. he (visit) the doctor four times this month. the dog (have) three puppies. mrs smith (not/open) her new shop yet. the decorators (paint) it for weeks. i hope you enjoy the rest of your stay in australia. (you /see) the famous opera house yet? tina sends her love. write to me soon

Susan 2) just/passed) her driving test. alex 3) not been writing) for weeks, probably because he been studying) very hard for his exams. uncle tom 5) been building) a shed in the garden. i think it will be ready next month. mr brown not been feeling) well recently. he (has visited) the doctor four times this month. the dog (has had) three puppies. mrs smith (has not/opened) her new shop yet. the (have been painting) it for weeks. i hope you enjoy the rest of your stay in australia. (have you /seen) the famous opera house yet?

We live in a world full of different types of pollution. wanting to make their lives easier people have invented so many new devices and factories, that nature is in danger. unfortunately, environment is not the unlimited source of resources. at the moment, our planet suffers from numerous problems and damages. for example, acid rain, which is the result of waste gases from power stations. such rains cause forest damages. other big problems are water shortage and the destroying ozone layer. it is all the result of pollution that comes from factories and plants. wildlife suffers as well. many species of animals and plants start to disappear. another big issue is global warming and green house effect. as you can see, there is a long list of environmental problems, which need to be solved. otherwise, our planet earth may get fully destroyed. people should start dealing with these problems immediately. the most important thing they can do is to change their attitude towards the environment. first of all, people should switch to alternative forms of power, such as wind power or solar energy. secondly, the use of nuclear power should be banned.