1. What do the following words have in common?

ARE

CAME

LIEN

GAPE

SMILE

2. What do the following words have in common?

RUB

MAP

GAB

AMP

Answers:

1. They are one-syllable words which change into three-syllable words with the addition of a single vowel.

AREA

CAMEO

ALIEN

AGAPE

SIMILE

2. Each word can be changed into a new one by adding LE at the end.