题目内容：

    In our daily life, we have developed a lot of habits, such as eating habits, study habits, reading habits, etc. However, taking the time to develop a sleep habit is probably the ________ thing on your mind and some sleep advice simply can’t be forgotten. Here are some bad habits you need to give up. Watching TV until you fall asleep.

It has n________ to do with what you watch — it’s the TV’s bright light that is the criminal（罪魁祸首）. The bright light keeps you awake all the night.

Sleeping with pets

Pets sleep most of the day, and they move a lot when sleeping. They get comfortable, and then they move. This goes on all night, and it often makes you not sleep w_______.

Eating fatty, heavy foods too close to bedtime

If you’ve ever tried to go to sleep after eating a fatty meal, you’ve probably found the discomfort of your stomach preventing you from f_______ asleep or staying asleep.

Exercising heavily too close to bedtime

Heavy exercise too close to bedtime raises your body temperature so that your sleep is disturbed（不安的）until your body temperature d_______ to normal, which may take several hours. Accepting snoring（打呼噜）as a normal sleep habit.

Snoring is the biggest sleep killer. Maybe it’s caused by sleeping on your back, being overweight, having a cold, drinking, or taking drugs. Most seriously, it’s caused by a dangerous illness. For the snorer, it disturbs sleep by awakening him/her so often in order to b________ normally.

1.l________

2.n_______

3.w_______

4.f________

5.d_______

6.b_______