The computers made by our company sell best, but several years ago no one could have imagined the role in the markets that they _________.
#104113
A
were playing
B
were to play
C
had played
D
played
推荐题目
When he was alive, the old scientist used to say that knowledge ＿＿from practice and he gained his experience by doing a lot of practical work.
#104398
A
was coming
B
had come
C
comes
D
would come
The young man，who by then ___ admission to university，decided to do some part-time jobs to gain more practical experience．
#100177
A
gained
B
was gaining
C
has gained
D
had gained
—You seemed not to be interested in the story yesterday.—Yes. I it in a magazine before.
#102872
A
read
B
was reading
C
have read
D
had read
He is too careless and he _______ keys.
#104138
A
always lost
B
always loses
C
is always losing
D
will always lose
Our earth is getting warmer and warmer. It is time for us to_____ the emission(排放) of CO2.
#99319
A
break down
B
cut in
C
cut down
D
cut off