用所给词适当形式填空。

    One evening, my mother (cook) in the kitchen when someone (call) her up. My mother (hurry)to answer the phone. They (talk) and (talk) and my mother (forget) the cooking. When my mother (return) to the kitchen，what (do)she (see)? The food in the pan (burn)(燃烧)！She (take) the cover and (cover) the pan at once. In a second the fire was put out，but the food was burnt.

    What a pity!