Answer: Hope this helps, though number 5 is a little tricky. let me know if its not right.
2.Me gusta estudiar quimica
4.Me gusta cantar y bailar.
5.Necesita una computadora para la clase.
Explanation:
Querer is a stem changing verb because when you conjugate it the "u" changes to "ie"
Hope that helps :D
"leer" or "Hablar" one of those too can be your answers.