It is only generally accepted to use different verb tenses when writing it in mid-sentence is the events that you want to show or describe did not happen at the same time. This would clearly show the difference in the time on when the events occurred. The answer would be option B.
Answer:
THE ANSWER IS C
Explanation:
I took the test this is the correct answer
Answer:
D
Explanation:
More studies need to be done to determine the possible detrimental or beneficial effects of watching cartoons.
I think this sentence is used in past but i don't what do u want?