________ is known to us all is that the famous author, for ________ life was hard in the past, still works very hard in his eighties. A．What; whom B．As; whom C．It; whose D．What; whose
The UN passed a rule in the year 2004 to improve the quality of drink water and reduce deaths caused by drinking unhealthy water each year. The UN has already worked out the specific plan to reduce ha
