We watch TV at home every evening.
1) Who watch TV at home every evening?
2) Where do we watch TV every evening?
3) When do we watch TV at home?
4) What do we do at home every evening?
Kitty writes letters to her granny once a month.
1) Who writes letters to her granny once a month?
2) Who does Kitty write letters once a month?
3) How often does Kitty write to her granny?
4) What does Kitty write to her granny once a month?