动词过去式的规则变化 — 英语填空题

用所给动词的适当形式填空（一般过去时，注意规则变化）。1. Last weekend, I ___ (help) my mother clean the house. 2. She ___ (study) English for two hours last night. 3. They ___ (play) basketball after school yesterday. 4. My father ___ (stop) the car at the red light just now. 5. We ___ (watch) an interesting film last Friday.