问题
sparing no efforts to create ______ morepeaceful and more advanced world, ______ place where everyone enjoy his lifeand freedom
A:none ofthem
B:allof them
C:none ofwhom
D:all of whom
B:allof them
C:none ofwhom
D:all of whom
正确答案是：
同类题型
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Could I speak to Mr Brown —— ______ ， I’1l go and see if he is in.
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