THEY ARE (DANCE AND SINGING/ DANCING AND SINGING/ DANCE AND SING/...

5. - on_tap_tieng_anh_4_tu_ngay_23_den_28_thang_3
on_tap_tieng_anh_4_tu_ngay_23_den_28_thang_3
5. They are (dance and singing/ dancing and singing/ dance and sing/ danced and sing) in the classroom.