Экологические проблемы вызывают стоки промышленных предприятий,добыча нефти,внесение удобрений на полях и транспортные пути.Эта проблема взаимоотношений общества и труда,сохранения окружающий среды.Особенно резко возросла нагрузка на окружающею среду во второй половине 20 века.
<span>I ________ (listened) to the radio while Mary __________ (was cooking) dinner.
Did you __________ (buy) this book yesterday?
Last Friday Jill __________ (went) home early because she __________ (wanted) to see a film.
When does your brother usually __________ (get) home in the evening?
Jane always __________ (brings) us a nice present.
What are those people __________ (do</span><span>ing) in the middle of the road?
Have you __________ (read) this book?
While Fred __________ (was sleep</span><span>ing), Judy __________ (was watch</span><span>ing) TV.
When I __________ (was) young, I __________ (thought) Mary __________ (was) nice — but now I __________ (think) she’s fantastic.
Jill __________ (was walk</span><span>ing) home when she __________ (saw) her husband’s car outside the cinema
Look there! Sue and Tim __________ (are running) to school.
Jack’s father __________ (does not work) in London — he __________ (does not speak) English.
Joe __________ (bought) a car yesterday.
Their father often __________ (goes) to rock concerts.
While you __________ (were sleep</span><span><span>ing</span>), mother __________ (arrived).
</span>
Used to play
doesn`t like
did not you
must not
further
horror stories
may
continue
so
would have done had had
appeared
fashionable
were
at the age of 7
are out of fashion
have been travelling
1. He... a teacher for three years
a) was <u>b)has been</u> c)have been
<span>2. Helen isn't here. She ... to the </span>
a)went b) has been <u>c) has gone</u>
3. Steve ... a new bike last week.
<u>a) bought</u> b) have bought c) buys
4. Mr Thompson ... here in 1995
a) come b) has come <u>c) came</u>
5. When ... school?
<u>a) did you leave</u> b) have you left c) do you left
6. W. Shakespeare ... over four hundred years ago.
<u>a)was born</u> b)has been born c) were born
7. "The Mayflower" ... at Plymouth Rock in December, 1620.
<span>a) has landed b) had landed <u>c) landed</u></span>