It snowed heavily last night ,( )prevented me from travelling abroad by plane

分类: 作业答案 • 2022-01-04 13:02:17

问题描述：

It snowed heavily last night ,( )prevented me from travelling abroad by plane
AthatBwhatCwhichDwhen
应该选which、吗?可是前面无先行词

答

which
此句的先行词是整个主句It snowed heavily last night （即昨晚下雪这件事）