Which verb form is used to indicate the perfect progressive tense?
a. verb + -ed
b. be + verb + -ing
c. have + been + verb + -ing
d. have + verb + -ed

Afruit stand has to decide what to charge for their produce. they decide to charge \$5.30$5.30dollar sign, 5, point, 30 for 111 apple and 111 orange. they also plan to charge \$14$14dollar sign, 14 for 222 apples and 222 oranges. we put this information into a system of linear equations. can we find a unique price for an apple and an orange?

Write an argumentative paragraph answering does technology make us feel more alone?

Abelief that one's culture is superior to another.