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—             has Bob been collecting stamps?
— Since he was 8 years old.

A. How often
B. How long
C. When
D. How much
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科目：初中英語 來源：四川省中考真題 題型：單選題

—_________ has Bob been collecting stamps?
—Since he was 8 years old.

[     ]

A. How often
B. How long
C. When

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科目：初中英語 來源：競賽題 題型：單選題

—             has Bob been collecting stamps?
— Since he was 8 years old.
[     ]
A. How often
B. How long
C. When
D. How much

查看答案和解析>>

科目：初中英語 來源：2008年四川省巴中市初中畢業(yè)升學統(tǒng)一考試、英語試卷 題型：016

－________ has Bob been collecting stamps?

－Since he was 8 years old．

[　　]

A．How often

B．How long

C．When

查看答案和解析>>


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