Use of English · Part 3
NASA has announced the (0) DISCOVERY (DISCOVER) of the eighth planet of a star system, similar to our solar system. The star, Kepler-90 is over 2,500 light years away and larger and hotter than our sun. It is the first star (1) .......... (KNOW) to have as many planets as our solar system. The Kepler-90 star system…
Desbloqueja tots els exàmens, simulacions il·limitades, les 80 fases del joc i molt més.