---Whydoyoulooksoupset?    ---Therearesomanytroublesom...

問題詳情：

 ---Why do you look so upset?   

 ---There are so many troublesome problems _____.

   A. remaining to be settled                B. remained settled 

   C. remaining to settle                   D. remained to be settled

【回答】

A

知識點：非謂語動詞

題型：選擇題