3.

which sentence does not contain any errors?

a.
i'm unsure how my brother's will react to the news.

b.
they'res one change to the schedule.

c.
it might not matter, but i can't tell if this bottle of water is mine or your's.

d.
all the children's chores should be completed before noon.

the third one.

hope it

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.)