How people increase the amount of gases in the atmosphere

every year the world’s industry pollutes the atmosphere with millions of tons of dust. during many processes poisonous gases are thrown out in the air. these gases not only make the air dirty and unsuitable for breathing but also destroy the ozone layer. the atmosphere pollution also causes the greenhouse effect. if there is much dirt in the air, it does not let out the sunrays. it means that the climate becomes warmer and warmer every year.  the danger is that a warmer climate causes the melting of the arctic ice and the rise in the level of the world ocean.

1. they are speaking at the moment. они разговаривают сейчас.- present continuous

2. время не указано, так что скорей всего present simple, но я и другие варианты:

    i read a book. - я читаю книгу (  present simple

    i read a book. - я читал книгу (в прошлом) -  past simple

    i'm reading a book. - я читаю книгу (сейчас) -  present continuous

3. we will learn this poem next week. - на следующей неделе мы будем учить этот стих наизусть.-  future simple,

4. the students had read an article by 5 o'clock yesterday. - к 5 часам вчера студенты (или ученики) прочитали статью.  -  past perfect

1. her brother usually  cleans  his room in the evening.

2. what are you doing now? 3.  does she live in moscow? i don't think so.  4. we often help  our mum about the house.5. my dad always says  "thank you"   to my mum for supper.6.  do you know that girl? no, i don't.7. my sister doesn't eat  vegetables and meat for dinner.8. what  are they drinking now? 9. where  are  your parents driving  at the moment? 10. is your  granny at home now?   no, she isn't.