DictationListen to the passage. For questions 21—25, fill in the blanks with th

Dictation
Listen to the passage. For questions 21—25, fill in the blanks with the exact words and phrases you hear.
    Experts now realize that sleep loss is dangerous and that night shift always results in sleep loss. Most people need 8 hours of sleep a day to feel rested. Parts of the night are spent in light sleep stages and the other parts of the night are spent in deep sleep stages.
    If you work the night shift and sleep during the day, there’re many things that can disturb your deep sleep and awaken you during your light sleep phase. Noise is the biggest problem. Daytime sleepers have to contend with noisy neighbours, children, traffic, lawn mowers and such. Noise is the most common complaint of people who sleep during the day: so, noise prevention should be given top priority. When looking for a home to rent or buy, always look for one in a quiet neighbourhood.
    Another sleep depriver is too much light. Our body’s entire cycle is based upon light and dark. If you’re doing the opposite of this set body programme, you’re fighting against generations of programming. Since sunlight will disturb your day you should choose a house where the bedroom is on the north side of the house. Wear a black eyemask to further block out the light. You don’t want any light coming in through your eyelids while you’re sleeping.
    For most night shift workers it’s wise to stay on the same sleep schedule, even during the weekends. If you work 5 days a week for 8-hour shifts it should be very difficult to switch to sleeping at night on the weekends and back to days during your work week.