叙述过去事件的表达 — 英语选择题
题目
Lin Tao is writing about his school trip. Which sentence best fits the blank? At noon, we were having lunch by the river when a heavy rain suddenly ___. It was the first time that we ___ a picnic in such bad weather. A. started; had had B. was starting; had C. had started; had D. started; have had