I don't know __ to do next?It's easy.Press the red button in 2 mimutes.A.what B.how 选哪个

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I don't know __ to do next?It's easy.Press the red button in 2 mimutes.A.what B.how 选哪个

选A ,如果选B的话 ,应该是 how to do it.

A

选A