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Does your mother have fruit __________breakfast?
A．on B．for C．at D．in
I was born _______ March,1999.
A．on B．in C．at D．for
Please call David ________289-6678.
A．in B．for C．at D．on
Who makes a cake ________ your birthday?
What are you doing vacation?
A．in B．on C．at D．for