Miss Lin a lot of work for the poor area for about 10 years.A. does B. didC. has done D.

问题补充：

Miss Lin a lot of work for the poor area for about 10 years.

A. does

B. did

C. has done

D. will do

答案：

A. does

B. did

(答案→)C. has done

D. will do

解析：句意：林小姐为这个贫困地区做了大约十年的工作。结合语境可知本句描述的是现在已经完成的动作，故用现在完成时态，选C。