She has two children, but are now working in Beijing．A.all of whomB.both of them
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She has two children, but ________ are now working in Beijing．
A.all of whom
B.both of them
C.neither of whom
D.either of them
试题答案
B
语境信息有三：①but表明为并列句，而非定语从句；②are表明为复数主语；③two为两者．