What do the following words have in common?

1. BIT

2. WRY

3. FEIGN

4. STING

5. BROW

6. MALE

7. CHARD 

HINT:

The same two letters will change each word into a new one.

Answers:

 

Adding or inserting the letters OR will change each word into a new one:

 

1. ORBIT

2. WORRY

3. FOREIGN

4. STORING

5. BORROW

6. MORALE

7. ORCHARD