correct sentence: arent these all questions: A)whom needs a ride to the concert? b}for who this letter is? C)whom are we following? D)to who does that dog belong? i choose a.

Answer 1

Only C is correct.

A. Who needs a ride to the concert?
("Who" is the subject of the sentence; therefore, there's no "m" on it.)

B. For whom is this letter?
("whom" is an object; therefore, there needs to be an "m" on it.)

C. Whom are we following?
("Whom" is the direct object of the verb "are following")

D. To whom does that dog belong?
("whom" is an object; therefore, there needs to be an "m" on it.)

Answer 2

http://www.elearnenglishlanguage.com/difficulties/whowhom.html