придумать 5 предложений на правило a/an the английский язык

1. ''Who is Ann ?'' asked Peter and Tom answered '' She is just a doctor and that's all''
2. There is an apple on the floor. Please pick it up.
3. The woman in blue dress went up to me and kissed again.
4. Our scients say that the Moon might be a part of Earth.
5. We booght a new car in Las Vegas last night.