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21. The sun, ____ is one of millions of stars in the universe, provides us with heat an light.

A. which              B. that C. who               D. A & B are correct

22. Tom made a number of suggestions, most of ____ were very helpful.

A. them                        B. which C. that                        D. B & C are correct

23. Alaska, __________ my brother lives, is the largest state in the United States.

A. which                       B. where C. w ho                      D. All are correct

24.  Tell me the reason ____________ you were absent yesterday.

A. where                       B. when C. why                          D. that

25.  There was a time __________ dinosaurs dominated the earth.

A. which           B. when C. that                             D. A & B are correct

26.  The house in ___________ I was born and grew up was destroyed in an earthquake ten years ago.

A. which                          B. where C. that                       D. All are correct

27.  Summer is the time of the year _________ the weather is the hottest.

A. when                      B. which C. that                          D. B & C are correct

28.  Sunday is the day on ___________ I am least busy.

A. where   B. when C. which                                  D. that

29.  Do you know the man about ___________ they’re talking?

A. whom                              B. whose C. that                                 D. A & C are correct

30.  What’s the name of the blonde girl ___________ just came in?

A. who                                 B. whose C. whom                             D. A & B are correct

31.  I don’t like people ___________ lose their tempers easily.

A. who                     B. whose C. that                           D. A & C are correct