I would have come sooner but I ________ that they were waiting. 
#104791
A
haven’t known
B
hadn’t known
C
don’t know
D
didn’t know
推荐题目
The hospital _________ well, where many wounded ________every day.
#102221
A
is operated; operation
B
operates; are operated on
C
operates; are operated
D
operates; operates on
When I called you this morning, nobody answered the phone. Where ________? 
#104733
A
did you go
B
have you gone
C
were you
D
had you been