While Tom was reading, Amely watched a documentary on TV.
Marvin came home, switched on the computer and checked his emails.
The thief sneaked into the house, stealed the jewels and left without a trace.
Nobody was listening while the teacher was explaining the tenses.
While we were doing a sight-seeing tour our friends lied on the beach.
He woke up and looked at his watch.
Red, hen, fell, ran, leafs, Nelly, Wendy, Ann, Lera, Helen, read, grass.
Разница в том,что второе предложение неправильное.
Во-первых, грамматическая ошибка.
Во-вторых,он сам выполняет это действие,поэтому должен быть только активный залог.
Первое предложение правильное.