________ I feel pity on hurricane victims in Southeast Asia,I can't really do very much to help

________ I feel pity on hurricane victims in Southeast Asia,I can't really do very much to help them but contribute my pocket money．

A.As long as

B.When

C.While

D.Even

答案及解析： C

解析：

解析：考查状语从句的连词，排除D，even是副词，A和B是时间状语从句，不符合题意。while此处相当于although．