The answers to the first four clues below will have something in common that is hinted at by the fifth clue. Can you determine what it is?

1. There's no such thing as this

2. Smog pollution measure

3. Diamond feat

4. One-eighty

5. Deceive

Answer to Clue 5:

Two-time 

Answers to Clues 1-4:

1. FREE LUNCH

2. AIR QUALITY

3. DOUBLE PLAY

4. ABOUT FACE - - -The second word of each answer can be followed by TIME:

 

1. LUNCH TIME

2. QUALITY TIME

3. PLAY TIME

4. FACE TIME 

 

Credit:

Jared Goudsmit