Simon improved his way of study.______ , he has made great progress.
My father ______ in China for 20 years already. He thinks his job is great.
______ good advice the teacher gave me!
--- Everyone is born special, because we are ______ others. So just be yourself.
I don’t think dropping litter is allowed in Yellow River Park, ________?
Lucy is unhealthy because she ______ has enough sleep every night.