Question

【题目】The children ______ a P.E. class on the playground when it began to rain suddenly.

A. have B. are having C. had D. were having

Answer 1

【答案】D

【解析】试题分析：句意：当天空突然开始下雨的时候，孩子们正在操场上上体育课。此题考查过去进行时，根据句意，应选D。