— What’s up?— There are so many problems .A. remained to be solvedB. remaining to solveC.

问题补充：

— What’s up?

— There are so many problems .

A. remained to be solved

B. remaining to solve

C. remained solving

D. remaining to be solved

答案：

A. remained to be solved

B. remaining to solve

C. remained solving

(答案→)D. remaining to be solved

解析：考查动词remain用法。动词remain可以转换成remaining剩下的；固定搭配sth remain to be done某事有待于被做；形容词remaing和remain to be done合在一起形成形容词短语remaining to be done修饰前面的名词。句意：—怎么了？—有很多问题有待于被解决。故D正确。

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