--How long have you been in London?-.A. Three timesB. I was there for a weekC. I’ve jus

问题补充：

--How long have you been in London? ---.

A. Three times

B. I was there for a week

C. I’ve just arrived

D. I’d been there for a month

答案：

A. Three times

B. I was there for a week

(答案→)C. I’ve just arrived

D. I’d been there for a month

解析：句意：---你在伦敦有多久了？--我在那里工作一个月。上句是现在完成时，回答时也是现在完成时，回答一段时间，用for+一段时间。故选D。