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15、Real teachers know that without them standing at the front of the class, ______ the knowledge, excitement, encouragement, passion and fun, schools will be very dull places indeed．

A．delivering                B．sending            C．teaching                D．presenting

15、A

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Real teachers know that without them standing at the front of the class, ______ the knowledge, excitement, encouragement, passion and fun, schools will be very dull places indeed．

A．delivering                B．sending            C．teaching                D．presenting

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