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I was born _______ March,1999.

A．on               B．in                C．a(chǎn)t               D．for

Who makes a cake ________ your birthday?

A．on                   B．in                    C．a(chǎn)t                   D．for

We go _____ duty at 8 a.m.

I'm going to America ______ December．

A．on                B．in             C．a(chǎn)t                     D．for

Is your brother good ________dancing?

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