Excuse me 不好意思；抱歉
Excuse me, where is the menu?
不好意思，菜单在哪里？

How long 多长时间
How long will it be until my order is ready?
我的菜还要多长时间才好？

How much longer 还需要多久
Excuse me, how much longer will our food be?
不好意思，我们点的菜还需要多久能上？

Check on 查看
Would you mind checking on my order?
你可以去看下我点的菜吗？
Could you check on our food, please?
能不能请你去看下我们点的菜？

Quite a while 很长时间；一阵子
We have been waiting for quite a while.
我们已经等了很长时间。
It's been quite a while.
好久不见

Hurry up! 快点
Hurry up! I'm starving!
快点！我要饿死了！