Use of English · Part 2
How much sleep (0) DO we really need? This can vary quite a lot between individuals. However, it is widely believed that between 6-8 hours (1) .......... healthy. What is particularly important is that this sleep happens at the right time; that it fits in with our body's natural rhythm. If you suffer from sleepiness…
Desbloqueja tots els exàmens, simulacions il·limitades, les 80 fases del joc i molt més.