单项选择题
Tom is the man who always does （） best even in the most difficult situation.
A. one's B. your C. their D. his
单项选择题 The earth revolves a little more rapidly （） it is closer to the sun.
单项选择题 "Can you ask your neighbors for help" "I'm afraid not. I （） know any of them."
单项选择题 The disabled children need many things, but（）, they need love.
