The five words below have something in common. Can you determine what it is?

1. MANIA

2. MINK

3. SOFA

4. QUIT

5. ROE

 

HINT: 

Add a letter to each word.

 

Answer:

 

Add a letter to each word and re-arrange the letters to spell a world capital:

 

1. MANIA + L = MANILA

2. MINK + S = MINSK

3. SOFA + I =   SOFIA

4. QUIT + O = QUITO

5. ROE + M  = ROME