Answer:
Try this website
Explanation:
https://quizlet.com/87287237/words-2-flash-cards/
He wanted to naturally express the aspects of how science gets done, and also depict the bad along with the good.
4 = can
5 = will be able
6 = was able
7 = can
8 = can
9 = can
A complete verb includes the main verb and all of the helping verbs. The helping verb in this sentence is "has," and the main verb is "mailed." "Not" is never considered a verb. Therefore, the complete verb is "has mailed"