1) The pupils do their homework.(The pupils do not do their homework.Do the pupils do their homework?) - верно
2)The
children drink milk in the evening. (The children do not drink milk
in the evening. Do сhildren drink milk in the evening?) - дети - мн.число... берем do
3)She dances very well. (She does not dance very well. Does she dance very well?) - верно
4)Nick goes to bed at ten. (Niсk does not go to bed at ten. Does Nick go to bed at ten?)