1. The two missing words in this verse differ by a single letter.

I tried to kill a cockroach with _ _ _ _ _ ;
He was too _ _ _ _ and got away.

2. The answers to this verse differ by two letters:

To avoid _ _ _ _ _ _ from sugary treats,
Skip the _ _ _ _ _ _ _ _ found in sweets.

3. Can you supply the very clever six-letter missing word?

The IRS, I fear, is widely known
For making what is yours _ _ _ _ _ _ .

Answers:

1. SPRAY - SPRY
2. CARIES - CALORIES
3. THEIRS (theIRS)

Credits: All from The Enigma
NPL Magazine

1: LEXMAN - March, 2014
2. SANIT - April, 2014
3. NEXT LINGO - April, 2014