at ten
I'm going to bed at ten.
Ela apagou todas as luzes às dez.
She turned off all the lights at ten.
He came home at ten.
Ela teve permissão de ir à discoteca, com a condição de estar de volta às dez.
She was allowed to go to the nightclub on the condition that she be back by ten.
Were you home at ten?
Tom geralmente vai dormir às dez e quarenta.
Tom usually goes to bed at 10:40.