一般过去时动词变化 — 英语填空题

Mary在日记中写道：Last Sunday, I ___ (go) to the park with my friends. We ___ (see) many beautiful flowers there, and Lucy ___ (take) some photos. On our way home, we ___ (buy) two ice creams and ___ (eat) them happily. 请用所给动词的一般过去式填空。（每个空一个词）