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Time goes by so fast . We must never miss the chance to show love for our parents and make them _____ how much they mean to us .

Time goes by so fast . We must never miss the chance to show love for our parents and make them _____ how much they mean to us .

A．to know           B．knowing           C．know             D．knew

Time goes by so fast. We must never miss the chance to show love for our parents and make them     how much they mean to us．

A．to know               B．knowing              C．know

Time goes by so fast . We must never miss the chance to show love for our parents and make them _____ how much they mean to us .