Поставьте следующие предложения в вопросительную и отрицательную формы. He was in Kiev last week. This is a pen. My sister works at the library. Our students read a lot of English books. I have a cat.
1)Was he in Kiev last week? He wasn't in Kiev last week. 2)Is this a pen? This isn't a pen. 3) Have I a cat? I haven't a cat.