Setting an excercise

Try exercise 5.
•I want you to do exercise 7A.
•Try the next exercise as well.
•Let's go to the exercise number 4.
•I'd like you to write the answer to exercise 8.
This is the way we'll do it.
•This how we shall do it.
•What we shall do is this.
•Watch me first.

Ajchara 3EN 051