4. talk like that. * A. Don’t
B. Be
C. Doesn’t
D. Aren’t
5. they speak Korean? *
A. Are
B. Does
C. Is
D. Do
6. They baseball *
A. don’t play
B. doesn’t play
C. aren’t play
D. not play
7. When lunch? *
A. you usually eat
B. do you usually eat
C. do usually you eat
D. do you eat usually

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.)

the author wants to draw the reader deeper into the experiences.