1. Dick is writing (a letter). = Is Dick writing a letter? Yes, he is. He is writing a letter. No, he isn't. He isn't writing a letter.
2. Donald is working (in the garden). = Is Donald working in the garden? Yes, he is. He is working in the garden. No, he isn't. He isn't working in the garden.
3. The girls are playing (volley-ball). = Are the girls playing volleyball? Yes, they are. They are playing volleyball. No, they aren't. They aren't playing volleyball.
4. Betty and Kate are typing (the documents). - Are Betty and Kate typing the documents? Yes, they are. They are typing the documents. No, they aren't. They aren't typing the documents.
5. Jane is washing (the floor). = Is Jane washing the floor? Yes, she is. She is washing the floor. No, she isn't. She isn't washing the floor.
6. The men are drinking (beer). = Are the men drinking beer? Yes, they are. They are drinking beer. No, they aren't. They aren't drinking beer.
7. Mary is drawing (a picture). = Is Mary drawing a picture? Yes, she is. She is drawing a picture. No, she isn't. She isn't drawing a picture.
8. She is dancing (with Paul).
= Is she dancing with Paul? Yes, she is. She is dancing with Paul. No, she isn't . She isn't dancing with Paul.