单项选择题
The residents, （） had been damaged by the fire, were given help by the Read Cross.
A. all of their homes B. all their homes C. whose all homes D. all of whose homes
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 water will be further polluted unless some measures （）.
