1. What do the following words have in common?

REV
MOB
MISS
TEXT

2. What do the following phrases have in common?

SNARE DRUM
GOOD EARTH
DODGE DART
FREE DRINK

HINTS:
1. The same three letters can be added to each word.

Answers:

1. The letters ILE can be added to each word to make new words:

REVILE
MOBILE
MISSILE
TEXTILE

2. Changing the spacing of the two words will form new phrases:

SNARED RUM
GOO DEARTH
DODGED ART
FREED RINK

Credits:
Richard Silvestri
#1: ILE BE AROUND
#2: PROPER SPACING