It helped improve their speaking skills. It helped them improve their speaking skills. 2、对象的区别 boost、improve 和 enhance 的对象也有所不同。 boost 和 enhance 更多地强调对某个事物的整体提高，而 improve 更多地强调对某个事物的具体方面进行改进。.
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The verb 'help' is used in different ways.
It helped them to improve their speaking.
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