当我邀请他加入我们时，他摇了摇头。

He ___shook ___his ___head when I asked him to join us.

他开车离开了，难以置信地摇着头。

He drove off, ___shaking ___his ___head in disbelief.

如果你不同意，请摇摇头。

Please ___shake ___your ___head if you disagree.