Excuse me. I _________ I was blocking(挡) your way.
#39207
A
didn't realize
B
don't realize
C
haven't realized
D
wasn't realizing
推荐题目
         she exercise every day?  
#38524
A
Do
B
Doing
C
Does
D
Did
By the end of last month, I _____ all the CDs of Justin Bieber.
#42234
A
collect
B
collected
C
have collected
D
had collected
---May I go out with you tomorrow?  ---If your job ______by then.
#42611
A
has been finished
B
finish 
C
will be finished
D
will finish
By the time he arrived at the airport, the plane            .
#41977
A
has taken off
B
was taking off
C
would take off
D
had taken off