正確答案是 A.can
How can it be = 怎么能夠,為什么,何故?
Mr bush is on time for everything.How can it be that he was late for the meeting?
布什先生慣常是準(zhǔn)時(shí)的.這一次的會(huì)議他怎么遲到了?為什么不能用should呢？這次他"竟然"遲到了How should it be that 不是 “為何他竟然遲到了” 的意思，How should it be that = 應(yīng)該如何？要如何做？四個(gè)選項(xiàng)里只有 A 適合。只有 How can it be 符合問(wèn)題的語(yǔ)境。