Question

The teacher said I am busy now

Answer 1

The teacher told that he was busy then.

Note:

1)Whn converting direct into indirect speech,

Now changes to then

2)And for "said to" told is written

3)When the reporting verb is in past thn reported speech too will be in past.

Answer 2

Answer:

I said to the boys, "You should do your duty"

Explanation:

Change the given sentence into indirect speech