We'll never give in ________ they might do or say about our plan．

We'll never give in ________ they might do or say about our plan．

A.no matter how

B.how

C.whatever

D.although

答案及解析： C

解析：

解析：此题考查让步状语从句。因为从句中的谓语do和say都是及物动词，只有whatever可以作它的宾语。