Choose the letter A, B, C or D to complete the sentences

Choose the letter A, B, C or D to complete the sentences
Question 6: I prefer face-to-face conversation __________ video call.
A. to        B. on        c. of        D. with
Question 7: There is no school teaching netiquette __________ we should learn it.
A. or        B. so       C. but       D. because
Question 8: Non-verbal __________ is popular in our daily life.
A. communicate       B. communication       C. communicative       D. communicating