You bite hard on your pencil, feeling your teeth sink into the wood.  Henry the seventh ruled from 1485-1509 and he married Elizabeth who was the daughter of Edward the fourth.  The next monarch was Henry the eighth who ruled from 1509-1547.  He was the one who had six wives and they were...

You see a flashing light from behind your eyelids.  You open your eyes and see Dongwoon holdigng his phone up in your direction.  He had a mischievous grin on his face.

"Woonie," you whine.  "Stop taking pictures of me.  I'm trying to study for the exam."  You reach to take the phone away, but he holds it over his head.