Question

The Introduction of coffee tea such other beverages has not been or have kot been

Answer 1

Answer:

C

Explanation:

has not been will replace have not been because–

The introduction is a Singular Subject and a

Singular Subject® Singular Verb

Plural Subject® Plural Verb

Hence, has not been without some effect is the right usage.

Answer 2

Answer:

has not been is the right answer