【题目】 选择填空。
am is are
1. I _______ Lucy. You _______ Tom. We are pupils.
2. I _______ dancing. He _______ singing.
3. My father and mother _______ watching TV. My grandpa _______ sleeping.
4. I _______ doing my homework. My father _______ writing. My mother is cooking.
5. The boys _______ playing football. The girls _______ playing games.
