Answer:
Sentry
Explanation:
Definition: a soldier stationed to keep guard or to control access to a place.
If you replace the word sentry with guard you would better understand the sentence.
I'm new it would help if you gave thanks :)
Answer:
They are found by the Nazis.
Explanation:
A cat supposedly dropped a book from the book shelf that was closing off the entrance to the annex and the door opened- a Nazi was standing outside and heard it, and soon he took them away
Answer: it was published in 1968. It was inspiration for science fiction,
It was described as an alien invasion on Earth
Explanation:
Thats all of them