____to go for a walk.it began to rain怎么不选when preparing而选as we were preparing

分类: 作业答案 • 2021-12-20 02:30:16

问题描述：

____to go for a walk.it began to rain
怎么不选when preparing而选as we were preparing

答

前后主语不一样，如果选了when preparing，就是主语一样了，而这有不符题意。

答