The worst feeling ever is not knowing whether you should wait or give up.know为什么要加ing

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The worst feeling ever is not knowing whether you should wait or give up.know为什么要加ing
The worst feeling ever is not knowing whether you should wait or give up.know为什么要加ing

The worst feeling ever is not knowing whether you should wait or give up.know为什么要加ing
此处的be+v-ing表示的是此动作正在进行.
搞笑的是,现在不知道你是会等待还是放弃.

整句句子的谓语是is不能再出现第二个谓语…所以know 要加ing

应为。。。