The children, ______ had played the whole day long, were worn out.
A. all of what B. all of which
C. all of them D. all of whom
We have launched another man－made satellite，________ is announced in today's newspaper.
A. that B. which
C．who D．what
Many countries are now setting up national parks ________ animals and plants can be protected.
A. when B. which
C. whose D. where
The book tells stories of the earthquake through the eyes of those ________ lives were affected.
A. whose B. that
C. who D. which
The president of the World Bank says he has a passion for China，________ he remembers starting as early as his childhood.
A．where B．which
C．what D．when
He wrote a letter ________ he explained what had happened in the accident.
A. what B. which
C. where D. how
