问题
选择题
)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
答案
答案：D
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。