I made a mistake in the Homework for this lesson - Part B, sentence 4. But I don't understand why it was wrong.
My answer is "We are going on vacation soon. Maybe Hawaii!", but the correct answer is "We are going to go on vacation soon. Maybe Hawaii!". Why is this?
Answer: It is fine to say it either way, but we were practising the structure "going to + verb" to indicate the near future.
Words like "maybe" and "soon" indicate the trip is not definitely planned...it is still a possibility/dream. For example, they have not paid for the air fares yet.