问题
选择题
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
答案
答案:D
题目分析:句意:但开始下雨时孩子们正在操场上上体育课。当一个动作发生时,另一个动作正在发生,该动作用进行时态,根据句意,故用过去进行时,故选D。