The same three letters, in the same order, will fill each pair of blanks below to complete an eleven-letter word.

Example:  RHI _ _ _ TO _ _ _
Answer:    RHINESTONES

1. STOM _ _ _ _ _ _ E

2. _ _ _ ERGRO _ _ _

3. MUDSL _ _ _ _ _ _

4. _ _ _ HE _ _ _ ICS

5. SEV _ _ _ E _ _ _ H

Answers:

1. STOMACHACHE
2. UNDERGROUND
3. MUDSLINGING
4. MATHEMATICS
5. SEVENTEENTH

Credit: GAMES Magazine - Mar. 1990
Will Shortz