No improvement to this sentence is necessary. It makes perfect sense on its own and sounds right. "Either" always takes an "or" else the word wouldn't make sense, as it's meant to contrast binary options.
eg.
I'm either going to eat food or drink water.
The excerpt given above is taken from Phillis Wheatley's poem "On Being Brought from Africa to America". The word sable literally means color black. In this line, Wheatley uses the word "sable" to indicate sense of inferiority. The author is an African and their race color is different from the rest.
(sorry if im wrong)
D(set in motion, cause to start
Yes, it is a major problem but some people tend to overlook it. Smoking can cause problems either now or in the future, but some kids might not care if this a real problem. It can cause a number of problem and severity of respiratory illnesses, decreased physical fitness and some effects on lung function. Smoking is not a way to cope with problems and should never be.
Say the hardest part of the project that was not ur favorite and for the how could the teacher change this project better next time give the teacher examples on how some parts u may not have understood and how he or she can make a new question explaining it better