для углеводорода 2,3-диметилпентен-1 составить формулы 2х гомологов и структурных изомеров всех видов

1lena stayed in bed in the morning because....

a)she didn"t want to get up early

b)she didn"t feel well

c)she didn"t have to go to school

2 lena"s mother decided to bring her lemon tea becouse....

a) lena had summer holidays

b)lena had a lot to do

c)lena had a sore throat

please

помогите пожалуйста очень надо

заранее спасибо