- How long have they France? For about half a year.A. been toB. gone toC. gone inD

问题补充：

--- How long have they France? --- For about half a year.

A. been to

B. gone to

C. gone in

D. been in

答案：

A. been to

B. gone to

C. gone in

(答案→)D. been in

解析：此题重点考查延续性动词的用法，因答语是段时间，故谓语动词要用延续性动词。go是非延续行动词，不能和段时间状语连用。have been to意思曾经去过某地与题干句意不通。