( )2.An accident ____ on this road last week.为什么不能选B而选D?( )2.An accident ____ on this road last week.A.has been happened B.was happened C.is happened D.happened

问题描述:

( )2.An accident ____ on this road last week.为什么不能选B而选D?
( )2.An accident ____ on this road last week.A.has been happened B.was happened C.is happened D.happened