66. To improve your spoken English, the real difficulty is how to o_______ your shyness.

65. Having good table manners means knowing how to b_______ yourself at the table.

64. His mother got sick; unfortunately, his father lost job, leaving the family even w_______ off.

根据所给句子的意思，填上合适的单词，并注意其正确形式。首字母已给出。

63. Michael Phelps, the 8 gold medals winner in 2008 Olympic Games, has a g_______ for swimming.