11.   The long summer vacation was almost over.

12.   The postcards were usually of places we had visited as a family on those grueling summer vacations long ago.

13.   They take a two-week family vacation every summer.

14.   This led into a couple of summers acting as a professional lifesaver during summer vacations from Sheffield University.

15.   Under the new plan, students will have shorter summer vacations and longer winter vacations.

16.   We had to write a composition about our summer vacations.

17.   What did you do on your summer vacation?

18.   Will you be home over the summer vacation?

19.   With school being such a lifeline for my beleaguered psyche, the long summer vacation presented a uniquely gloomy and purgatorial prospect.

20.   During his summer vacation he visited Russia.