In this task you are given a sentence. You must judge whether subject of the main clause is singular or plural. Label the instances as "Singular" or "Plural" based on your judgment.
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Question: The deep boom of the two shots, which had been batting to and fro among the mountains, died away.

Answer: Singular


Question: Jackson's nostrils flared and I expected him to defend his actions, but he changed his tactic.

Answer: Plural


Question: His brothers' lectures had distracted him from watching the window and the guesthouse to make sure Samson didn't sneak out on them.

Answer:
Singular