Two letters can be added to each word below to create new words in such a way that the last two letters of each word are related. The two letters are different for each clue.

1. TO
2. NO
3. DO
4. TON
5. SPA
6. TOP
7. PER
8. DOG
9. HOOP
10. COMMA

Answer:

A U.S. state postal  abbreviation can be added to each word:

1. TOOK
2. NONE
3. DOOR
4. TONGA
5. SPADE or SPAIN
6. TOPAZ
7. PERKY
8. DOGMA
9. HOOPLA
10. COMMAND

Credit: 
Based on a puzzle by Pauline Burman
STATELY ADDITIONS 
Posted January 7, 2017