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4 Whenever she has time, she ______(help) them in their work

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4 Whenever she has time, she ______(help) them in their work.
根据动词的正确形式填空.请问除了填will help之外,还可以填helps吗?请说明原因,谢谢!
4 Whenever she has time, she ______(help) them in their work
用will help表示她一旦有时间,就会这样.是一种假设状态,条件装于从句的主句用将来时,从句用一般现在时.标明是在有时间的条件下
用helps则表示她一贯都这样.Whenever she has time中have用的第三人称单数has,表示这是现在时,强调一贯这样,所以可以填helps,前后统一.