Welcome to the forum, murattopak.I would probably use the progressive/continuous form, but I would not say that the non-progressive form was incorrect.Women ________(use) their maiden names increasingly since the 1970's.
I said have used but the answer is have been using
Okay, this can be written by using present perfect continuous tense, no problem, but also present perfect tense is sounds good to me.Both forms (and several others) are acceptable.Throughout the first few months of their marriage, Jeff and Donna _________(spend) most of their conversation time discussing their expectations from each other and from the marriage itself...
I said will have spent but the answer is will spend.
The problem with this type of exercise is that the writer has one idea in mind, and ignores the fact that others may be acceptable.
ps. Don't forget to use a capital letter for the pronoun I.
Student or Learner