1I wasn't writing an English exercise at this time yesterday.
Was I writing an English exercise at this time yesterday?
2My little sister isn't sleeping now.
Is my little sister sleeping now?
3My little sister wasn't sleeping at this time yesterday.
Was my little sister sleeping at this time yesterday?
4My friends aren't doing their homework now.
Are my friends doing their homework now?
5My friends weren't doing their homework at seven o'clock yesterday.
Were my friends doing their homework at seven o'clock yesterday?
6They weren't playing volley-ball.
Were they playing volley-ball?
7She wasn't reading the whole evening yesterday.
Was she reading the whole evening yesterday?
8She isn't reading now.
Is she reading now?
9Now she isn't going to school.
Is she going to school now?
10Look! My cat isn't playing with the ball.
Is my cat playing with the ball?