Complete the dramatic teenager's diary entry by dragging the correct expressions into the blanks.

"High school is a ruthless, dog-eat-dog world where everyone is competing for the best grades. However, missing the bus today was actually a blessing in disguise, because I completely avoided Mr. Smith's terrible pop quiz!"

High school is a ruthless, dog-eat-dog world where everyone is competing for the best grades.

A "dog-eat-dog" world refers to a highly competitive environment where people will do anything to succeed. "Doggy dog world" is a popular mondegreen (misheard phrase) popularized by a famous rap album, but it's grammatically incorrect.

However, missing the bus today was actually a blessing in disguise, because I completely avoided Mr. Smith's terrible pop quiz!

A "blessing in disguise" is a good thing that initially seemed bad. It is hidden (in disguise), not flying up in the clouds ("in the skies").