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

B．that

C．at which

D．where

The room ________ Mr．White lives is not very large．

A．that

B．which

C．where

D．when

They stayed with me three weeks, ________ they drank all the wine I had．

A．which

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

B．which

C．that

D．he

Those successful deaf dancers think that dancing is an activity ________ sight matters more than hearing．

A．when

B．whose

C．which

D．where