题目内容
From mum's love, patience and understanding, I have learned what a great responsibility ________ is to raise a child.
[ ]
A.it
B.that
C.this
D.one
答案:A
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题目内容
From mum's love, patience and understanding, I have learned what a great responsibility ________ is to raise a child.
A.it
B.that
C.this
D.one