1. What do the following words have in common?

ISSUE
SAGE
DEER
CASE
STUN

2. What do the following words have in common?

KITTENS
PIGS
WORDS

HINT:
1. The same letter will change each word into a new one.

Answers:

1.Each word can be changed into a new one by adding or insertng a T in the appropriate place:

TISSUE
STAGE
DETER
CASTE
STUNT 

2. Each word can be preceded by "THREE LITTLE."

Three Little Kittens
Three Little Pigs
Three little words  (I love you)