相关考题
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单项选择题
The mistake was（）by carelessness of the assistant.
A.due
B.caused
C.because
D.owe -
单项选择题
The volunteers started looking after other children（）parents died of AIDS last year
A.whose
B.that
C.which
D.who -
单项选择题
I started looking after other children（）parents went out to work.
A.who
B.which
C.whose
D.that
