Washing the food down with water as a substitute____ chewing is not a good habit.
A、of
B、for
C、reward
D、award
【正确答案】：B
【题目解析】：句意：用水把食物冲下去代替咀嚼不是一个好习惯。
Washing the food down with water as a substitute____ chewing is
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