ANALOGIES I
The Puzzlemaster Presents Vol. 2
Will Shortz

In this puzzle, provide the word that will complete each analogy. Every answer involves wordplay of some sort, and each one's logic is different. For example,

Option : Potion :: Arrest : ________ ?

The answer word would be Rarest - switching the first two letters.

1. Mar : Sheep :: Gats : ________
2. Uprise : Downfall :: Undergo : ________
3. Sent : Tennessee :: Imps : ____________
4. Puddle : Ping-Pong :: Mullet : ________
5. Beat : Attend :: Goon : ______________
6. Chocolate : Moose :: Missing : ________
7. Hasten : Greece :: Animal : ___________
8. Cat : Civet :: Gorilla : _______________

Answers:

1. Deer (male of the animal spelled backward)
2. Overcome (opposite of each half of the word)
3. Mississippi (state formed by repeating the letters of the word as many times as necessary)
4. Polo or croquet (game played with the equipment named by changing the second letter of the word form U to A -Paddle - Mallet)
5. Continue ..... or any synonym of this word (Be at - Go on) 
6. Lynx (Chocolate mousse - Missing links) 
7. Philippines (Country whose capital is an anagram of the previous word - Athens/Manila
8. Gerbil (Hard sound of C to soft sound, hard sound of G to soft sound)