Making the sentence parallel, the teachers like john because
a, has been coming to class on time, participated in class discussion, and submits his assignments before deadlines.
b, comes to class on time, is participating in class discussions, and is submitting his assignments before deadlines.
c, comes to class on time, participates in class discussions, and submits his assignments before the deadlines.

Hi !!

Make the sentence parallel  ► ANSWER = C

The teachers like John because he comes to class on time,/ participates in class discussions,/ and submits his assignments before the deadlines.

all  the verbs are conjugated the same way...

-

☺☺☺

every four years the american people choose a new president, and 1988 is one of those years."

the answer is b. the tracer looks harmless in flight, but the pilot’s bitten lips and white knuckles suggest how dangerous it can be.