What I need to do if I have an exam tomorrow to remember all the subjects and got a perfect 10 or 9??

Well, from my experience, just study as much as possible. If you have things to read from a textbook, read the sections/lessons over again (that always helps me) If you are writing notes, it has been proven that if you write with blue pen, you will remember the material better. However, the biggest thing to remember is DON'T STRESS! You will do much better if you don't second guess every answer and worry about it the entire time. Good luck! Hope this helps! :)

a. "to practice" is the best phrase to complete the sentence.

explanation:

during the summer, she likes to practice her soccer skills so that she is ready to play in the fall.

(note that : all the other options "the practicing of", "practice for" and "to do a practice on" are inappropriate as they make the sentence grammatically incorrect.)