1. The explorer demonstrated the first TV in 1925.
2. My mother isn`t cleaning the floor now.
3. My brother can use the Internet in many ways.
4. I feed my cat every day.
5. My sister was translating a book when the telephone rang.
6. A pupil broke the window yesterday.
7. My mother isn`t washing my clothes at the moment.
8. My sister must do this test.