Resposta :
Resposta:
a) When you play tennis, you should watch the ball.
b) It’s late and you are very tired. You should go to bed.
c) You should clean your teeth twice a day.
d) If you have time, you should visit the Science Museum. It’s very
interesting.
e) When you’re driving, you should wear a seat belt.
f) It’s too far to walk from here to the station. You should take a taxi.