1. I have never been to London.
2. She has finished work this week.
3. They have already gone.
4. My friend hasn't called me this week.
5. They haven’t done the dishes yet.
6. I haven't already gone.
7.Have you ever been to Brazil?
8. Has the letter been sent yet?
9. Has Linda iearnt English before?
10. We have already written the dictation.