<h2><em>Ответ</em><em /><em>во</em><em /><em>вложении</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em></h2>
1.When I looked out of the window, I saw John.
2.Have <span>you ever played the piano since you left school?
3.</span><span> I haven't seen him for two days.
4.</span><span>When he was trying to open the door, he dropped his key.
5.</span><span>They have been living in this house since 1987.
6.</span><span>My father was washing his car while my mother and I were preparing dinner.
7. Did </span><span>you met her yesterday?
8.</span><span> Mary has been in London for three days.
9.</span><span>The headmaster entered the classroom when they were writing their exams.
10.</span><span>He bought a new car last week.
11.</span><span>I think that they will arrive tomorrow morning.
12.</span><span> Last Wednesday they played chess after they had done their homework.</span>
Today I'm not going to school