________ global temperatures rising, the UN Climate Change Conference was held in Cancun（坎昆）, Mexico last year．
#96412
A
Prevented
B
Preventing
C
Having prevented
D
To prevent
推荐题目
Sandy could do nothing but ______ to his teacher that he was wrong.
#95307
A
to admit
B
admitted
C
admit
D
admitting
To our surprise, the painting considered______ should have won the prize.
#98881
A
being copied
B
having been copied
C
to have copied
D
to have been copied
In 1720,Bach’s wife suddenly died, ______him with four children．
#97090
A
leaving
B
to leave
C
left
D
had left