Reorder the words to make sentences

Ex10: Reorder the words to make sentences.
1. boys/ what/ in/ are /  the classroom /doing / ?
2. studio / are/  and / dancing/  They/  at /  singing/ the.
3. Hoa / Nam /stadium/ and/  running/ are/ the/ at/
4. my father / watching / video / I / are / a / the/  coffee shop/ and/ at/
5. is / doing/ Linda / What /?
6. arcade / the/ Is/ video/ playing/ at / Tom/ games /?
7. Nina/ Are / Nick / the / at / studio / doing / What / and /?
8. I'm / my dad / singing / at / at / the / the / and / playing / soccer / is / soccer field / studio .
9. doing / What / and / Bill / friends / the / at / are / park / skate / his /?