单项选择题
The teacher came into the room, with his hands（）behind his back.
A. being crossed B. having crossed C. crossed D. to be crossed
单项选择题 Tom is the man who always does （） best even in the most difficult situation.
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."
