Answer Key
Pre-test
You have already passed this section on 2015-02-20 at 15:11 scoring 90%.
Choose the best expressions.
- Top government officials [are leaving] the country because of the threat of war.
 - Sorry I'm late. Don't worry. We [haven't been waiting] long.
 - Alan is on vacation. Great! Where [has he gone] ?
 - The travel agency [is currently selling] airline tickets to Spain for half price.
 - John [collects] coins for a hobby.
 - My sister is a model. She [has appeared] in several magazines.
 - I lost my car keys. [Have you seen] them anywhere?
 - Where have you been? [Have you been playing] golf?
 - My father [locks] all the doors and windows before we go to bed.
 - Although Mary says she is feeling better, I think she [is still losing] weight.