So far all cloned animals have suffered from some different serious disorders，________ dying soon after birth.
A．many of which B．many of whom
C．many of them D．many of that
The students ________ are expected to pass.
A．were taught by Professor Deacon
B．whom were taught by Professor Deacon
C．when were taught by Professor Deacon
D．Professor Deacon taught
Jim passed the driving test，________ surprised everybody in the office.
A．which B．that
C．this D．it
I want to use the same dictionary ________ was used yesterday.
A．which B．who
C．what D．as
After living in Pairs for fifty years he returned to the small town ________ he grew up as a child.
A．which B．where
C．that D．when
________ is known to everybody，the moon travels around the earth once every month.
A．It B．As
C．That D．What
