50.I had a lot of trouble______the car_____this moring.

61.My own problems seem insignificant_____thoes of others.

60.No bank will want_____interest rates when the prices of goods keep rising.

59.Since you are a little tired, you had better_____a rest.

58.It's my great honor_____to give a speech at the opening ceremony of the art festival.

57.I suggested_____at the hotel but my wife was eager______.

56._____,we had to stay at home.

55.To know what is good and_____are two quite different things.

54.We regret_____you that your application has not been accepted.

53.The speaker raised his voice but still couldn't make himself_____.

52._____how to solve the mathematics problem, Stephanie asked her teacher for help.