— Hey! Everyone in the office was at the dinner party in honor of Mr. Charles except you. What happened?— I ______ after Mike, my colleague. He was badly ill.
After two years’ research, we now have a ____ better understanding of the disease.
____ he had not hurt his leg, John would have won the race.
We all know that, __________, the situation will get worse.
---The last one __________________ pays the meal. ---Agreed!
Some pre-school children go to a day care center, _____ they learn simple games and songs.