become单数复数

become
英 [bɪˈkʌm] 美 [bɪˈkʌm]
vi.
变得;变成;变为，成为
vt.
变成;适合，适宜;相称，相当;发生
第三人称单数： becomes 现在分词： becoming
过去式： became 过去分词： become

becomes，

diligence and humility合在一起作主语，

became

是becomes