- She was not studying at 9 P.M. (Negatif)
- Was she studying at 9 P.M.? (Tanya)
2. They were walking home. (Positif)
- They were not walking home. (Negatif)
- Were they walking home? (Tanya)
3. Siska and Wanda were cooking fried rice at 7 o'clock yesterday. (Positif)
- Siska and Wanda were not cooking fried rice at 7 o'clock yesterday. (Negatif)
- Were Siska and Wanda cooking fried rice at 7 o'clock yesterday? (Tanya)
4. I was studying for the exam comprehensively. (Positif)
- I was not studying for the exam comprehensively. (Negatif)
- Was I studying for the exam comprehensively? (Tanya)