The old man had three sons, all of ________ died during World War Ⅱ．
A．whose
B．that
C．whom
D．who
________ is known to all, English is not very difficult to learn．
A．What
B．As
C．That
D．Which
He returned home safe and sound after a fierce battle, ________ was unexpected．
A．which
B．as
C．that
D．it
I've finished writing the novel, ________ is to be published next month．
A．that
B．what
C．which
D．when
Don't forget the day ________ you were received into the Youth League．
A．when
C．at which
D．where
The room ________ Mr．White lives is not very large．
B．which
C．where
They stayed with me three weeks, ________ they drank all the wine I had．
B．which time
C．during which time
D．during which
The train was crowded and I had to get into a carriage ________ already seven other people．
A．when there were
B．which there were
C．that there were
D．where there were
Alice received an invitation from her boss, ________ came as a surprise．
A．it
D．he
Those successful deaf dancers think that dancing is an activity ________ sight matters more than hearing．
B．whose