What ______ me was that there was a ______ look on her face due to the ______ problem.

Their cheerful voices showed that they were having a          discussion.

Mr. Brent is a man with _______ personality—he never seems tired with so much work to do every day. 

Can't we just live today, ____ the worries of tomorrow or the regrets of the rest?

As most of you seem confused, now I’m going to the __________ measures.