1 Were they writing grammar exercises at 6 o'clock yesterday?
2 Who was writing grammar exercises?
3 What were they writing?
4 Were they writing grammar exercises or doing phonetics?
5 They were writing grammar exercises, weren't they?
1 Were they writing grammar exercises at 6 o'clock yesterday?
2 Who was writing grammar exercises?
3 What were they writing?
4 Were they writing grammar exercises or doing phonetics?
5 They were writing grammar exercises, weren't they?