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【单选题】
He helped the workers with the defense _______their interests.A.
about
B.
against
C.
by
D.
of
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举一反三
【简答题】试述 Ig 的生物学功能。
【简答题】When George defeated __________ in the 1,500-metre race and won the gold medal, his friends shouted out __________. They came forward to __________ and to __________ the victory. (excitement, congra...
【简答题】When George defeated his _________(对手)in the 1,500-meter race and won the gold medal, his friends shouted out in excitement.
【单选题】When George defeated his ______ in the 1,500-metre race and won the gold medal, his friends shouted out in excitement.
A.
colleagues
B.
competitors
C.
friends
D.
players
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