Hi Joanna! Good questions. See my edits below: 1. You could use the phrase "high season" instead of "high holiday season" -"High season was in August and this caused an increase in sales of $170,000." -Or "August was the beginning of high season and this caused an increase in sales of $170,000." -Either of those would be acceptable. 2. We had an advertising campaign. -This sentence is perfect! 3. "We had some bad weather," or "The weather was bad." -Either phrase would be acceptable! / Chelsea