Answer: B) At
Explanation for this question is being written.
Answer: A) At
Answer: C) At
Answer: A) Since
Answer: A) On
Answer: A) In
Answer: B) On
Answer: B) Over
Answer: B) In
Answer: D) No error.
Answer: C) For
Answer: D) During
Answer: C) At 6:00 tonight.
Answer: A) Upon
Answer: D) On
Answer: A) From until.
Answer: C) On
Answer: B) For
Answer: B) Since
Answer: D) 3 years.
Answer: A) During
Answer: C) After
Answer: B) After
Answer: A) Until
Answer: C) Monday
Answer: C) I went there at 8 a.m.
Answer: C) In
Answer: A) On / in.
Answer: C) At what time.
Answer: C) Since
Answer: A) Before
Answer: C) In May.
Answer: A) For
Answer: A) IN