题目内容

I think ______ necessary for us to learn English well.
[     ]
A. it
B. its
C. that
D. that's
A
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[     ]

A. that
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[     ]
A. It
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[     ]
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A. It
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单项选择。
____ about three hundred kilometers from Shijiazhuang to Beijing.
[     ]
a. It's　 　　
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d. This is　
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[     ]
A. that; spent          
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[     ]
A. it    
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