waiter (n.)
服务员

例句：
The waiter brought our food to us quickly.
这个服务生很快地把我们的食物端来了。

come to hand
到手（多指收到来信） 

例句：
Your letter has just come to hand.
刚收到你的信。

It's time for school.
该上学了。

It's time for lunch.
该吃午饭了。

对话：
A: Hurry up, Tony. It's time for school.
B: All right. I'm coming.

A：快点，Tony。该上学了。
B：好的。我马上就来。