Here are the answers/Aqui estão as respostas:
a)I made a reservation last week,I want to make it clear!
b)Are you doing overtime?Ithink you´re making lots of money.
c)Everyone made/makes an effort to help her.
d)I´ll have to make an important choice.
e)We always do our best!You have no reason to complain.
f)It can do wonders!Believe me!
g)He did English for three years.
h)You have to do a test in order to get into college.