Question

问一道初中英语题，动词时态的

Allen ____ her keys in the office. So she had to wait until her
husband______.
A.has left;comes B.left;came
C.had left;came D.had left;would come
选哪个，为什么，最好详细点

Answer 1

C
忘了钥匙在等待之前，所以跳一级用过去完成时
until的句式如果一般主句将来，从句现在
但是现在主句是过去，从句当然也是一般过去式

Answer 2

C，后面是had,说明是讲以前发生的事,忘拿钥匙发生在过去的过去，所以用过去完成式

Answer 3

a

Answer 4

c