动词过去式与过去进行时 — 英语词汇题
题目
用括号内动词的正确形式填空：Last Saturday, while my brother ____(fix) his bike in the yard, I ____(prepare) a picnic basket in the kitchen. Suddenly, the sky ____(turn) dark, and it ____(begin) to rain heavily. We quickly ____(carry) everything inside and watched the rain from the window.