The problem is (i think!) that let's get + ~ing. Get on与get in的区别为：意思不同、用法不同、侧重点不同。 一、意思不同 1、get on：（同…）和睦相处，继续做。 2、get in：当选，挤出时间做。 二、用法不同 1、get on：get是英. The basic difference is that 'let's get started' is right, and 'let's get starting' is wrong, it's not possible.
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