用be doing when do造5句，是陈述句，急！！

Question

如题所述

Answer 1

用be doing when do造5句，是陈述句，急！！
1.I am doing my homework when he watches TV.
2.When you go to school your sister is crying.
3.When I come home my mother is cooking.
4.He is singing when you ask the teacher questions.
5.My friend is sweeping the floor when his mother gets home.