Question

Language point: should and must
5 Study the examples and complete the rules
with should and must.
I must be at home at five o'clock.
You should get him this one.
We mustn't use our phones at school. It's
against the rules.
You shouldn't buy that shirt. It's horrible!
RULES
We use '_ to talk about obligation and we
use 2_ to give advice.

Answer 1

RULES

We use MUST to talk about obligation and we use SHOULD to give advice.