Though the novel had a happy ending, the readers were left ____.

There is a ________ look on her face. She must have seen something horrible.

 Having said he would mend the clock, he discovered that he had not brought the _____ tools for the job.

Just like fingerprints, each person’s DNA is ________unless he has a twin.

Hi, Mark. How was the musical evening?— Excellent! Ales and Andy performed _________ and they won the firs prize.