Complete the following text using relative pronouns. Who invented toothpaste? Toothpaste is an invention (1) .......... doesn't seem to have a definite inventor or date. Something like it was known in ancient Egypt, (2) .......... people used a paste made of a mixture of ash and powdered egg shell, (3) they rubbed on their teeth with their fingers. In 1873 the Colgate Company - the same one (4) makes toothpaste today - introduced Colgate Dental cream, (5) ......... smelled and tasted much nicer than anything else used until then. Soon after this, people began to use toothbrushes instead of sticks or fingers, (6) .......... made cleaning teeth much easier. However, most Americans didn't brush their teeth regularly until the 1940s, (7) .......... American soldiers (8) had spent several years in Europe and learned the habit there, went home after the Second rld War 4 The me about 5 Many me a 6 Ther mig! a text line. va rog ajutat-ma