Ты поставила глаголы в неправильной форме. Исправляю.
1They are riding their bikes now. Are they riding their bikes now? Are they riding their bikes or horses now? What are they doing now? They are riding their bikes now, aren't they?
2 I am writing a letter now. I am writing a letter now, ain't I? Am I writing a letter now? Am I writing a letter or reading a book now? What am I doing now?
3We are having fun today. We are having fun today, aren't we? Are we having fun today? Are we having fun today or not? When are we having fun?
4 She is running in the park now. Is she running in the park now? Is she running in the park or playing tennis now? She is running in the park now, isn't she? Who is running in the park now?
5 I am swimming in the pool now. I am swimming in the pool now, ain't I? Am I swimming in the pool now? Am I swimming in the pool or fishing now? Where am I now?
