The Apollo 11 astronauts _______ of the Earth's inhabitants witnessed on the famous first moonwalk on July 20, 1969, were Neil Armstrong and Buzz Aldrin.
The sentence has a main subject and verb divided by several phrases describing the main subject. After the blank there is the preposition of which leads to believe that a noun should be part of the blank.
1. It is not (A) because a single connector is insufficient.
2. It is not (C) because it has a verb which is not needed.
3. It is not (D) because it has a verb and no noun.
4. It is (B).
Answer Anonymously
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