83. The chair is very soft. She sat in it and felt very c________.

82. A large number of mouths must be fed in those less d________ countries.

根据句义，完成句中已给出首字母的单词。

81. A hard-working student d_______ to succeed.

45.(　　 ) He 　　　　　　Party member for a long time. 　　　 A. has joined　　　　　　　 B. has been in　　　　　　 C. has been a　　　　 D. has been

44.(　　 ) I　 want 　　　　　　of the two. Please show me another one. 　　　 A. either　　 　　　　　　　　　　 B. all　　　　　　　 C. both　　　　　　　　　　 D. neither