3) Choose the correct answer.

1. You should *** to your doctor.
a) listen
b) listened
c) listening

2.He***time in the open air.
a) shoulds spend
b) should spend
c) should to spend

3.You shouldn't itt many sweets.
a) to eat
b) eat
c) eating

4.He***cold water
a) doesn’t should drink
b) shouldn’t drink
c) should drink not