Use of English · Parte 3
Some of the (0) GREATEST (GREAT) steps forward in medicine began not with careful planning but with a totally (1) .......... (EXPECT) result that no one in the laboratory had foreseen. A young researcher had been exploring the genuine (2) .......... (POSSIBLE) of finding a cheaper way to destroy harmful germs when he…
Desbloquea todos los exámenes, simulaciones ilimitadas, las 80 fases del juego y mucho más.