Tìm các lỗi sai trong các câu sau

tìm các lỗi sai trong các câu sau :
1: I was play football when she called me
2: was you study math at 5 p.m.yesterday ?
3: what was she do while her mother was making lunch?
4:where did you went last sunday ?
                                                           cảm ơn chức =))