1. You have five minutes.
You can spend ten times on this.
I will give you five minutes on this /to do this .
You will have to stop in two minutes/ minutes' time.
Don't spend more than a few minutes on/doing this activity.
2. Is everything clear.
Is that clear?
Are you clear about what to do /that I mean /how to do it?
Are there any questions?
Have you all understood?
(Did) anyone not understand?
Have you all got that?
Did you all follow that?
Shall I go over it/the instructions again?
Who still doesn't understand what they have got to do?
3. Right,you can start.
Away/off you go.
Begin/Start working.
Is everybody ready?
If you are ready, we will start.
Let's get to work.
Get on with it.
Sayumporn 065 3EN