急!请老师解答几个英语问题!Come on.l have an important thing____ you

Come on.l have an important thing____ you.

A.to tell B.telling C.tell D.told

There are two books here;_____is Lilyˊs and _____is Lusyˊs.

A.other;others B.one;the other C.another;the otherˊs D.other;the other

Mr.Green is sitting ___some students and telling them a story.

A.between B.among C.in the middle  D.on