1) What was mother doing in the kitchen at 5 o'clock?2) Where was mother cooking dinner?3) When was mother cooking dinner in the kitchen?
1) Who was standing at the bus-stop?2) What was your friend doing at the bus-stop?3) When did you see your friend standing at the bus-stop?
1) What was mother doing in the kitchen at 5 o'clock?
2) Where was mother cooking dinner?
3) When was mother cooking dinner in the kitchen?
1) Who was standing at the bus-stop?
2) What was your friend doing at the bus-stop?
3) When did you see your friend standing at the bus-stop?