The airline company, following through on recent warnings that it might start reducing service, announced that it was eliminating jet service to nine cities, closing some unneeded operations, and it grounded twenty-two planes.

 A

closing some unneeded operations, and it grounded

 B

closing some unneeded operations, and grounding

 C

was closing some unneeded operations, while it grounded

 D

it closed some unneeded operations and grounded

 E

it was closing some unneeded operations, and grounding

【申友解析】

正确答案：B

选项A The airline company announced that （it was eliminating jet service to nine cities）  and （it grounded twenty-two planes.）AND前后平行问题；

选项B 正确，句子结构The airline company announced that it was (eliminating jet service to nine cities）  and  (grounding  twenty-two planes.)

选项C 一个句子两个谓语 announced和was，排除

选项D The airline company announced that (it was eliminating jet service to nine cities),(it closed some unneeded operations and grounded twenty-two planes.)这里that从句里面两个主谓错误

选项E The airline company announced that （it was eliminating jet service to nine cities）,（it was closing some unneeded operations）, and （grounding twenty-two planes.） 第二个括号it was 多余