1. she doesnt like /to clean/ her room before holiday.
2.tom usually /to dance/ at the party
3 my grandma always /to bake/ paskas on easter
4 i usually /to get/ many presents on birthday
5 my mother always /to cook/ supper
6does your father /to buy/food before holiday
7when ... you /celebrate/ easter?
8what ....dan/to do/ before easter?

как правильно вставить слово в скобках,и если можно объяснить почему так

Tom usually dances at the partyMy grandma always bakes paskas on easterI usually get many presents on birthdaymy mother always cooks supperDoes your father buy food before holiday?When do you celebrate easter?What does Dan do before easter?Это время Present Simple. После местоимений he, she, it глагол приобретает окончание "s", после остальных местоимений глагол ставится без окончаний