单选题 Statesmen are expert at delivering speeches in front of the public.
  • A. good
  • B. busy
  • C. comfortable
  • D. accustomed


【正确答案】 A
【答案解析】be expert/good at都表示“擅长的、内行的”；busy：忙于；comfortable：舒适的、舒服的；accustomed：习惯于。