问题描述：
1help doing 还是help do2剩余的水是leaving water 还是left water
问题解答：
1.help sb. to do/sb.do2.left water
1.help sb. to do2.the water left
less water 我写的是 doing 但是貌似是do 诶
1.can't help doing help sb to do2 left water
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