1.spread one's wings
The swan is spreading its wings.
2.go abroad
When did you go abroad?
3.pollution
Air pollution is becoming worse and worse.
4.unhealthy
You shouldn't eat too much unhealthy food.
5.fight
We should fight against air pollution.
6.azalea
If you're walking the dog,take the time to admire an azalea bush in bloom.
7.probably
It will probably rain.
8.harmful
Smoking is harmful to your health.
9.pass
Please pass the pen to me.
10.collect
I like to collect stamps.