Chinese President Hu Jintao called for an immediate cease-fire in Libya ______ an even worse humanitarian crisis in the country at the BRICS Summit in Hainan province.
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A
to prevent
B
to have prevented
C
preventing
D
having prevented
推荐题目
I was told that there were about 50 foreign students ________ Chinese in the school, most ________ were from Germany.
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A
study; of whom
B
study; of them
C
studying; of them
D
studying; of whom
. The library’s study room is full of students _______ for the exam.
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A
usily prepared  
B
usy preparing  
C
usily prepare  
D
re busily preparing
Lily’s mobile phone was left in a taxi accidentally,never______again.
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A
to find
B
to be found
C
finding
D
being found