Tags are very common in spoken English, and have many functions. One of the common functions is to start a conversation or help keep it going. The two basic rules about tag questions are:1  If the statement is negative, the tag must be positive.ags are very common in spoken English, and have many functions. One of the common functions is to start a conversation or help keep it going. The two basic rules about tag questions are:
The average cost for a community to fluoridate its water is estimated to range from approximately $0.50 a year per person in large communities to approximately $3.00 a year per person in small communities. For most cities, every $1 invested in water fluoridation saves $38 in dental treatment costs.55 âFor most cities, every $1 invested in water fluoridation saves $38 in dental treatment costs.â It can be calculated from these data that the average lifetime cost per person to fluoridate a water system is less than the cost of one dental filling.
Information regarding expenditures on water main breaks from 2008 to 2013 was presented in an answer to an enquiry at Mondayâs council meeting. Swanson submitted the enquiry on Nov. 25. For the first six months of the year, the average cost of a water main break was $23,526.43 per break.The average cost of a water main break in 2013 was $21,871.26. âI remember about five or six years ago, there was a response where it indicated our average water main break cost was about $5,000,â said Swanson.wanson submitted the enquiry on Nov. 25. For the first six months of the year, the average cost of a water main break was $23,526.43 per break. The average cost of a water main break in 2013 was $21,871.26.