These Top Of Foot Arthritis Symptoms Are Often Mistaken For Aging
"those / these" are determiners and are used before nouns to refer to a particular group of things / people, e.g. these people / those rules / those buildings. Update: 题主问的是What are those? 然后他.
Psoriatic Arthritis In The Feet: Symptoms, Treatment, Home, 40% OFF
