【to prepare for the olympics games in summer lo】

问题补充：

to prepare for the olympics games in summer,london ＿＿its largest ever exercise to test the response for emergency services.A.planned B.is planning C.had planned D.

答案：

为了准备夏季奥运会,伦敦准备举行一场有史以来最大的演练,来检验应急服务响应.

这题目有点过时了,选B,用现在进行时表将来.

======以下答案可供参考======

供参考答案1:

B.is planning