The president promised to keep all the board members __________ of how the negotiations were going on. A) informed B) inform C) be informed D) informingkeep后面不是省略to的吗？怎么不选C？再请问这里的how 怎么用？
热心网友
选A。这里是keep的复合结构，informed of是宾补。how引起的是of的宾语从句，从句内作going on的状语。主席许诺说要让所有的部委成员知道谈判的进展情况。