Mr. Green          his lessons when I went into his office.
#36608
A
prepares
B
prepared
C
is preparing
D
was preparing
推荐题目
Look, so many people are running out of the station. I wonder what ________.
#36284
A
is happened
B
was happening
C
is happening
D
had happened
Tom said he           to Guangzhou.
#40149
A
never went
B
had never been
C
has never gone
D
has never been
Look,so many passengers__________ with their smart phones on the underground.
#39026
A
played
B
will play
C
are playing
D
have played
_____ when the light went on last night?
#37783
A
What were you doing
B
What have you done
C
What did you do
D
How were you doing