Wecan_____(save)waterby_____(notbrush)ourteethunderarunningtap.
2022-01-01 86次 反馈错误 加入收藏 正确率 : 100%
题目内容：
We can _____(save) water by _____(not brush) our teeth under a running tap.
优质解答
We can save water by not brushing our teeth under a running tap.
by 是介词,后面要跟动名词.
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