Accoding to the old stories of Iceland and Norway,Eric the Red was forced to leave Iceland because he had committed a murder,_______he got into trouble.
A.for which  B,at which  C.in which  D.with which

He lost his favorite watch, _________ made him very sad.

Professor Li is the person to ____________ you should write.

Do you know the reason _______ he was late?

I’ll take you to the museum ______ you may see everything _________ you want.

Is oxygen the only gas ________ helps fire burn?

The summer holidays are not far away _________ we can stay at home and read some good books.

Football, ________ is an interesting game, is played all over the world.

_______ Japan’s nuclear crisis (核危机) will be solved in 2011 is not known yet.

Little Tommy was not willing to tell the teacher _______ he had done before.