Let's begin.
When does it begin?
Let's begin on page 30.
Now let's begin the game.
When did it begin to rain?
What time does school begin?
Let's begin at the beginning.
How soon will the meeting begin?
Leaves begin to fall in October.
Peace talks will begin next week.
Let's begin with the first chapter.
I'll begin doing the job right away.
Class doesn't begin until eight-thirty.
I think I have to begin working on my homework.
If you want security in your old age, begin saving now.