Helen ______ her keys in the office so she had to wait until her husband ______ home. 
#102080
A
has left; comes
B
left; had come
C
had left; came
D
had left; would come
推荐题目
I’m sure you will do better in the test because you ________ so hard this year.
#101584
A
studied
B
had studied
C
will study
D
have been studying
I know little about the accident because not much_________ about it up to now
#99272
A
has said
B
has been said
C
had said
D
had been said
Since then I _______ a member of the family and never _______from them.
#104313
A
have be come; will I separate
B
have be come; I will separate
C
have been; will be separated
D
have been; I was separated