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".

[Q]: The man worked for hours to clean the carpet with his vacuum, but the _ didn't work. (A) carpet (B) vacuum
[A]: B


[Q]: The tantrum thrown by the autistic child was dealt with by Matthew but not Kenneth, because _ had spent very little time around special needs kids. (A) Matthew (B) Kenneth
[A]: B


[Q]: The man put the paper under the book because he wanted to conceal the _ . (A) paper (B) book
[A]:
A