Two students     1     have attended the summer camp write their letters to the editor,     2    (express) their opinions about the camp.

Before attending the camp, Wang Lu often felt sleepy and dizzy. So she decided     3    (change) herself. As a dentist said that too much sugar had damaged her teeth, Wang Lu made up her mind to avoid sugar and to exercise     4    (regular). And the results have been fantastic. Wang feels more dynamic and     5    (strong) in both body and mind. Best of all,     6     her opinion, she feels like she is in control of her own life.

After starting high school, George felt stressed out and     7    (try) to relax by playing too much computer games. After struggling for some time, he found     8     necessary to replace online games with something else such as rock climbing, bowling, and playing basketball. Now he gets refreshed through spending time climbing and exercising with his father. After six months of trying out new ways of relaxing, he becomes     9     confident and     10    (energy) teenager.

Winter is here! Are you also wondering how that happened so quickly? If you are now experiencing the     1     (pleasant) effects of little sunlight, you are not alone.

Many people’s mood goes slightly down as the days are getting shorter. Even if you don’t suffer from SAD (Seasonal Affective Disorder),     2     is also called winter depression, you might feel different than just a few weeks ago.

Does that sound familiar? If so, I hear you and a possible solution can     3     (recommend) to you! That is—laughter!

As Mirthy’s Laughter Yoga Leader, I     4     (strong) believe in the health benefits of laughter, which are indeed impressive. The most obvious gain is that     5     puts people in a good mood. After     6     (assess) mood levels before and after the Laughter Yoga session, we find many participants’ mood goes up by at least two points—and that’s without drugs or pills, just by “a little bit” of laughter.

Dr Madan Katana, who is a medical doctor and created Laughter Yoga,     7     (do) quite a bit of research and found that laughter is a mild antidepressant (抗抑郁药) as it releases endorphins and serotonin. What’s more, laughter can be     8     natural pain killer—and without side effects.

Laughter is also a great stress relief and reduces the levels of stress hormones in our bodies. If you keep in mind that almost 90% of all illnesses are associated with stress and tension     9     (hold) in our body, laughter is an easy remedy, isn’t it? So there is some     10     (true) in the old saying: “Laughter is the best medicine.”—well, at least it’s a start!