Question

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?

Answer 1

C

解析:

把鑰匙忘在辦公室里發(fā)生在等她丈夫回來(lái)之前，要用過(guò)去完成時(shí)。在until引導(dǎo)的時(shí)間狀語(yǔ)從句中謂語(yǔ)動(dòng)詞用一般過(guò)去時(shí)。?