grammar problem The customer service department is committed to "providing" friendly service and prompt replies. In this case, Why I can not use regular verb tense "provide" after the prepositions "to" ? I will appreciate any answers.

grammar questions "in the past year, the Royal Charter for Lawyers has been implementing ___measures___ that are in keeping with association's ethics." I had this grammar problem. In this case, Does anyone know why "measures" can put in after present perfect continuous tense which is " has been implementing"? I appreciate any answers, thank you.

well rested or well-rested I saw an article stated, " finally, they may just not feel well rested after a night of sleep." I am wondering if I can also switch to "well-rested" in this case. Do the word "well" and "rested" both used as an adjective in this sentence? I appreciate any answers, thank you.

adjective clause or noun clasue From this passage below, "that influence a student’s sense of well-being" is an adjective clause or noun clause? Any helps will be greatly appreciated! College campuses exist all across America, and each contains a multitude of forces that influence a student’s sense of well-being.