题目内容
用适当的介词填空
He swam across the river ________ a piece of wood．
He swam across the river ________ a piece of wood.
He was healed ________ his sickness.
He came home ________ a rainy night．
He fed the meter(计时器)________ coins．
He leaped ________ the stream ________ a single leap．
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