TASK DEFINITION: In this task, you are given a question containing a blank (_) and two options. You should pick the best option to answer the question. Please answer with "A" or "B".
PROBLEM: Natalie told Tanya about a ghost that haunts the house,  but _ failed to frighten her. (A) Natalie (B) Tanya

SOLUTION: A

PROBLEM: I put the pen away and used a pencil to write my letter, as the _ worked poorly with the paper. (A) pen (B) pencil

SOLUTION: A

PROBLEM: Zack had to fix the broken machine and replaced the gears but left the pins because the _ were fine. (A) gears (B) pins

SOLUTION:
B