Subjects in Complex & Inverted Sentences

Identify the grammatical subject of the following sentence: "Hidden behind the old oak tree were several small wooden crates."

Which of the following is the subject in this sentence? "Not until the very end of the performance did the lead actor speak a single word."

What is the subject of this sentence? "Along the winding river banks grow thousands of delicate wild orchids."

Identify the subject: "Seldom have I seen such a breathtaking sunset in this part of the country."

In the sentence "Among the guests was a man whom nobody seemed to recognize," the subject is:

Choose the correct subject for: "Scarcely had the pilot reached the cockpit when the emergency alarms began to ring."

Identify the subject: "Under no circumstances should the security doors be left unlocked at night."

What is the subject of this inverted sentence? "Standing in the middle of the crowded station were my long-lost cousins."

Hardly had the announcement been made when the audience erupted into applause.

In the sentence "Included in the price of the tour are all meals and transport costs," the subject is:

Identify the subject: "Only after years of intense training can a surgeon perform such delicate operations."

What is the subject? "Down the steep hill ran the three exhausted competitors."

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Little did the explorers realize that they were being watched from the shadows.

In the sentence "So complex was the problem that even the experts were baffled," the subject of the first clause is: