一Whyareyousoamazed?—Ineverthoughtofthere＿＿somanygreatch...

问题详情：

一Why are you so amazed?

—I never thought of there＿＿so many great changes in this area．

A．were      B．being          C．to be            D．to have been

【回答】

B

知识点：非谓语动词

题型：选择题