When his mother returned home he had already done home exrcises
1. Pete is writing the word "foreign". He has written the word "foreign". Pete has written the word "foreign". He wrote the word "foreign" a minute ago.
2. He is opening the window. He has opened the window. Nick has opened the window. He opened the window a minute ago.
<em>I think that I have spent my winter holidays well. I played with my friends went skiing and skating. I liked the view of the nature covered with snow. It looked very nice. In winter we celebrated a New Year and congratulated our relatives. I spent my winter holidays with my relatives and it was the best I have ever spent.</em>
Вроде это. Артикли a/an, the.
Nine - это точно.В остальных словах буква ( S)- употребляется.