1.You have been in Germany.
You haven't been in Germany.
Have you been in Germany?
2. She has closed the door.
She hasn't closed the door.
Has she closed the door?
3. He has taken my bag.
He hasn't taken my bag.
Has he taken my bag?
4. I have found his telephone number.
I haven't found his telephone number.
Have I found his telephone number? (trochę głupio pytać siebie)
5. It has started raining.
It hasn't started raining.
Has it started raining?