Answer: A) On
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Answer: B) On
Answer: C) On
Answer: B) Since
Answer: A) At
Answer: C) At
Answer: B) In
Answer: A) AT
Answer: D) By / in.
Answer: B) On, on.
Answer: D) On
Answer: A) In
Answer: A) Since
Answer: C) For
Answer: A) ON
Answer: B) At
Answer: D) At
Answer: C) AT
Answer: D) Since
Answer: B) By
Answer: A) Go to school.
Answer: C) By
Answer: B) Until
Answer: A) In the year 3000.
Answer: C) In
Answer: B) ON
Answer: B) Before