28. Vitamin D helps our bodies make a special chemical, and this special chemical, _______, affects our brains, making us feel happy.
_____, your composition is full of mistakes.
_____ with so much trouble, we failed to complete the task on time.
The couple _____ last year. They had lived together for twenty years, though.
Much to our _____, China won 51 gold medals, more than any other nation, at the 2008 Beijing Olympic Games.
I’m afraid I’m not _____ to help with the show next week.