Воткните союзные слова which, who, where, when, whose.He has three sons,

Вставьте союзные слова which, who, where, when, whose.He has three sons, all work at the factory. They went to Spain last week their friends live. I went fishing last Sunday, is my favourite way of spending free time. Look at this girl, photo we saw yesterday. It was last winter, we met first.