IMPROVISATIONS
Credit: NY Times Crossword - June 18, 1989
Louis Baron  (adapted)

Complete the following sentences with a single word. The number of blanks indicates the number of letters in the word. Warning: Wordplay is fair play.

1. _ _ _ _ _ _ _ _ is something you need to play pool

2. _ _ _ _ _ _ _ _ _ a creature that has fins and breathes through gills.

3. "_ _ _ _ _ _ _ person I've told this to."

4."_ _ _ _ _ _ _ _ _ _ sick and tired of all this." 

HINTS:
The first letters of the missing words are:
1. A
2. O
3. U
4. A

Answers:

1. ACOUSTIC   (A cue stick)
2. OFFICIOUS  (A fish is)
3. UNIVERSE   (You're the first)
4. ARMAGEDDON  (I'm gettting)