This problem may lead to more serious ones if ____ unsolved.
39. Let’s learn to use the problem we are facing _______ a stepping-stone to future success.
38. I think Jim is the right man for the job. He is hard-working, smart, and _______ kind-hearted.
37. --- I’ve read another book this week. --- Well, maybe _______ is not how much you read but what you read that is important.
36. People are deeply struck by Forrest Gump because of his unselfish _______ to helping others.
35. In a room above the store, where a party _____ in half an hour, some workers are busily setting the table.