In the past few years there _________great changes in my hometown. 
#36987
A
have been
B
were
C
had been
D
are
推荐题目
Look,so many passengers__________ with their smart phones on the underground.
#39026
A
played
B
will play
C
are playing
D
have played
While I _______ down the street, I _______ my classmates.
#41817
A
was walking; met
B
walked; met
C
was walking; was meeting
D
walked; was meeting
There are many people downstairs. What do you think ______?
#42822
A
to happen
B
happening
C
is happened
D
has happened