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- How old are you, madam?- If you know, I’m twice my son’s age. A．can B．mustC．ma

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- How old are you, madam?- If you know, I’m twice my son’s age. A．can B．mustC．ma

10. — How old are you, madam?

— If you _______ know, I’m twice my son’s age.                               

A．can B．mustC．may D．Should

试题答案

B

解析

标签：madamifknowyouhow

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