E－mail,as well as telephones, an important part in daily communication.
#86089
A
is playing
B
have played
C
are playing
D
play
推荐题目
Every possible means ________ to prevent the air pollution，but the sky is still not very clear.
#85546
A
were using
B
have used
C
has been used
D
was used
“39 Steps”is one of the most exciting films_________ directed by my brother.
#85708
A
which were
B
which was
C
that was
D
that were
As I have a meeting at four, ten minutes _____ all that I can spare to talk with you.
#86307
A
are
B
was
C
is
D
were