Ответ:
2) Have you read this book?
Yes, I have already read it.
When did you read it?
I've read it two month ago / I read it two month ago
3) Was it raining yet?
Yes, it was raining two hours ago.
4) Have you ever seen Tom's bag?
No, I didn't see it. I saw Tom on Friday, but not his bag.
5) Has he wrote anything about his summer plans? / Did he write anything about his summer plans?
6) You have already had dinner yet?
Yes, we had dinner at 3 o'clock.