British adventurer and swimmer Lewis Gordon Pugh became the first person to swim in the icy waters of North Pole，to raise awareness of how global warming ______ the polar ice cap.
#104351
A
had affected
B
is affecting
C
affected
D
will affect
推荐题目
My seven-year-old daughter has a great interest in music and _______ Piano classes twice a week over the last three years.
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A
took
B
is taking
C
had taken
D
has been taking
His failure in the experiment suggested that he ________ his teacher’s proper instructions.
#101852
A
should not have followed
B
should not follow
C
mustn’t have followed
D
hadn’t followed
Oh, much smoke here! Somebody ________ the window, please.
#99446
A
opens
B
open
C
shall open
D
will open
—Such a mistake could have been avoided. —Unfortunately, he ________ the mistake again and again.
#104785
A
repeated
B
would repeat
C
had repeated
D
would have repeated
With all the food supply ___, the researchers had to put an end to the wildlife protection project and returned home.
#103075
A
running out
B
to use up
C
run out of
D
using up