下面各组单词中，有一个不同类的，把它选出来。
( ) 1. A. Tuesday B. Saturday C. holiday D. Monday
( ) 2. A. bathroom B. kitchen C. living room D. park
( ) 3. A. closet B. end table C. clothes D. shelf
( ) 4. A. at B. on C. there D. in
( ) 5. A. sweet B. sour C. salty D. strict