Helen her key in the office so she had to wait until her husband home.? A.has le

Helen her key in the office so she had to wait until her husband 　 home.?

A.has left; comes　 B.left; had come?

C.had left; came D.had left; would come

试题答案

C

把钥匙忘在办公室里发生在等她丈夫回来之前，要用过去完成时。在until引导的时间状语从句中谓语动词要用一般过去时。