Use of English · Parte 5
Rubber is the name of an elastic (0) MATERIAL which can both stretch and (1) ........... It can be either (2) .......... from natural sources, or made in factories. Natural rubber (3) .......... from the white sap of some trees. To collect this sap, people have to cut the tree in a special way for the sap to slowly…
Desbloqueie todas as provas, simulados ilimitados, as 80 fases do jogo e muito mais.