Use "both" or "the two"

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

 boys were fighting.
They were
 shouting at the top of their voices.
 were bleeding when the police arrived.
They dragged
 kids into different cars.
Suddenly
 of them started to cry.