1, laughter in the brow, song in the throat, a good thing, almost commonplace.

It is common for Wang to be bullied.

3, bandits do evil, killing and setting fire is a common occurrence.

4. Pre-competition questioning is as common as post-competition drug testing.

It is common for Haley to weigh a big lie against a small one.

6. I remember when I was a child, it was common to do needlework at home.