1. The average size of a supermarket grew two years ago.
2. The average size of a supermarket grows every year.
3. The average size of a supermarket will grow by the end of the 21st century.
4. The average size of a supermarket is growing now.
5. The average size of a supermarket was growing fast in the 20th century.
6. The average size of a supermarket will be growing during the next two years.
7. The average size of a supermarket has grown recently.
8. The average size of a supermarket had grown by 2016.
9. The average size of a supermarket had grown by the end of the decade.
10. Several retail businesses went out of business in 2010.
11. Sometimes retail businesses go out of business.
12. Several retail businesses will go out of business next year.
Several retail businesses are going out of business now.
14. Several retail businesses were going out of business during the last half year.
15. Several retail businesses will be going out of business when a new distribution channel appears.
16. Several retail businesses have gone out of business recently.
17. Several retail businesses had gone out of business by 2016.
18. Several retail businesses will have gone out of business by 2035.
