.He was feeling bad. He went to work, _______, and tried to fix his attention on it.
About ____ of the teachers in our school ____ young people under thirty.
___Mr Chen is waiting outside to speak to you. He appears to be quite ___ important person.
Suan!Where have you been? You have no idea ___ worried I was.
—We all had a lot of fun at the barbecue yesterday. Pity you weren’t there. —I really should have gone with you but I _____ on some remaining problems.