____to go for a walk.it began to rain怎么不选when preparing而选as we we_英语解答

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

人气：162 ℃　时间：2019-11-15 07:27:08

解答

因为后面的主语是it而前面的准备的主语必须是人,两个主语不一致不能省略用非谓语的,所以原答案正确