人们为了进入热门展览要排几个小时的队。

People ___queue for hours to enter the popular exhibition.

他们很早就开始排队购买演唱会门票。

They were ___queueing up early for the concert tickets.

因为自助服务机坏了，我们不得不排队。

We had to ___queue because the self-service machine wasn't working.