Which sentence has a parallel structure?
a. the internet is a great resource for personal information, research, and for playing games.
b. the teacher asked one student to come to the board, write the formula, and to solve the problem.
c. the professor told her to write her research report quickly, accurately, and thoroughly if she wanted an
a.
d. the encyclopedia can be used to look up specific information, to find historical dates, and for school reports.

active voice: my father cut the tree.

passive voice: the tree was cut by my father.

active voice: people buy newspapers every day.

passive voice: newspapers are bought (by people) every day.

active voice: people have been using movies as political propaganda since world war ii.

passive voice: movies have been used as political propaganda since world war ii.

active voice: donna gave me my birthday present.

passive voice: i was given my birthday present (by donna). / my birthday present was given to me (by donna).

active voice: mom will leave the keys on the counter.

passive voice: the keys will be left (by mom) on the counter.

the words in parentheses are the agent of the passive voice and can be omitted when obvious, generic, or simply unnecessary.

the answer is sail boat won the race , and it was going 8 feet per   second

answer: may i ask who shelly is?

the underline word is basically like a prepositional phrase.