Answer: B) Hammers
Explanation for this question is being written.
Answer: A) Is
Answer: A) Each student's answer was graded carefully.
Answer: A) Has
Answer: A) Was
Answer: D) Each
Answer: B) Is
Answer: A) Have
Answer: A) True
Answer: A) A-knows
Answer: B) Walks
Answer: B) Are
Answer: B) Each of the students has a book.
Answer: C) Was
Answer: A) Requires
Answer: B) Has
Answer: C) Neither suggestion made by him was accepted.
Answer: B) Receives
Answer: C) Each
Answer: C) Change "play" to "plays".
Answer: C) Is
Answer: A) Is training.
Answer: C) One must return.
Answer: A) Shows
Answer: B) D
Answer: A) Singular
Answer: B) Knows
Answer: C) Have
Answer: A) It
Answer: B) Expect
Answer: B) Goes
Answer: C) Contributes
Answer: A) Shares
Answer: A) B
Answer: C) Ava's and Ben's consoles are the newest models.
Answer: B) Singular
Answer: A) Correct
Answer: D) Each of the students has completed their homework.
Answer: B) It requires a singular verb.
Answer: B) Plays
Answer: A) Contributes
Answer: A) Have $\rightarrow$ has.
Answer: B) Was
Answer: B) Were