cent air crash, ________ more than two hundred people lost their lives, has renewed concerns over the safety of flight travel.

The boy, whom I consider ________, cheated in the exam.

24．—I just heard you had an adventure in the desert—We lost our way and ______ made matters worse was that our jeep broke down

Life is like _____exciting race, you either take ____ lead or fall behind.

I ____________ you not to move my dictionary—now I can’t find it