)You can give the document to is in the office.However, to require a written paper for it.
A. who;make sure
B. whom;making sure
C. whomever;be sure
D. whoever;be sure
网友回答
A. who;make sure
B. whom;making sure
C. whomever;be sure
(答案→)D. whoever;be sure
解析：考查名词性从句。whoever引导宾语从句，在从句中作主语;be sure开始一个祈使句。