(So great) (was) the influence of Thomas Paine (on) his own time that John Adams suggested that the era (was called) 'The Age of Paine'.
A.So great
B.was
C.on
D.was calhd

A.A.So
B.was
C.on
D.was

【参考答案】

D
解析：应为(should)be called。suggested决定了该句的宾语从句为虚拟语气。