—Why didn’t you go to the movie yesterday? —Because I_________it before. 
#42506
A
had watched
B
have seen
C
have watched
D
had seen
推荐题目
When the teacher ______ how to do the experiment, the bell rang.
#37863
A
explains
B
will explain
C
was explaining
D
is explaining
What ____________ at nine o’clock last Sunday morning.? 
#40551
A
was you doing
B
were you doing
C
are they doing
D
do you do
Have you ever ________ the Great wall?
#40391
A
been to
B
gone to
C
go to
D
been
he girl sitting next to me on the plane was very nervous, for she            before.
#36660
A
hasn’t flown
B
hadn’t flown
C
didn’t fly
D
wasn’t flying