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【单选题】

Being a parent is not always easy, and being a parent of a child with special needs often carries with _______ extra stress.

A.
it
B.
them
C.
one
D.
him
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参考答案:
参考解析:
.
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举一反三

【单选题】Almost all of his time ______ experiments, he has no time to visit his parents.

A.
devoted to do
B.
devoted to doing
C.
devoting to doing
D.
is devoted to doing