GOLD ………IN CALIFORNIA IN THE 19TH CENTURY .A.DISCOVERED B.HAS BEEN...
19. Gold ………in California in the 19
th
century .A.discovered B.has been discovered C.was discovered D.had discoveredBạn đang xem 19. - KIEM TRA HK1
th
century .A.discovered B.has been discovered C.was discovered D.had discovered