Answer: A) For
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Answer: C) On
Answer: A) Since
Answer: B) In
Answer: C) After
Answer: C) During
Answer: B) Since
Answer: B) On
Answer: A) In 1990.
Answer: A) In
Answer: A) For the time being.
Answer: A) Within
Answer: B) For
Answer: C) Throughout
Answer: D) At
Answer: C) Before
Answer: C) In
Answer: A) Ago
Answer: A) Before
Answer: B) At
Answer: A) IN
Answer: B) Before
Answer: A) During
Answer: C) At
Answer: D) By
Answer: B) By
Answer: A) At
Answer: A) On
Answer: C) While
Answer: A) After
Answer: B) In, at.