语法问题

cherie890821

请教一道题目：
Developingnations in various parts of the world have amassed $700 billion in debts; atstake, should a significant number of these debts be repudiated, is thesolvency of some of the world’s largest multinational banks.
(A) should asignificant number of these debts be repudiated, is
(B) should asignificant number of these debts be repudiated, are
(C) should theyrepudiate a significant number of these debts, are
(D) if there is arepudiation of a significant number of these debts, would be（A）
(E) if asignificant number of these debts will be repudiated, is
为什么这题选A...？没大看懂...
谢谢~

liberzephyr

这道题的难度是不是算5星的

cherie890821

谢谢~

loverwy

主句主语为 "the solvency", 所以谓动应该为单数，排除B/C.

D: there be + 抽象名词（动作性名词：repudiation)错，且主句用了would be, 则if从句动词应该用were, 而不是is.

E: if条件状语从句不能使用将来时，而是用一般现在时表将来。

slamyaoming

介词结构at stake 前置 ，后面倒装吧， 然后整句话作主语。