阅读下面短文, 按照句子结构的语法性和上下文连贯的要求, 在空白处填入一个适当的词或使用括号中词语的正确形式填空。

Last Thanksgiving Day, I visited an American friend of _____(my). At his home, he made some banana milk shakes _____ me, and he taught me _____ to make them. I _____(watch)the steps(步骤)carefully. First, he peeled the bananas, cut them into _____(piece)and then put them into the blender. _____(two), he poured yogurt and honey into the blender, added some sugar and mixed them up. Third, he _____ on the blender. Then he _____(dig)a hole in a watermelon, made it empty(空的), _____(fill)it with the shake and put it in the fridge to make it much ______(cool). After ten minutes, we drank the shake. It was very delicious.

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