句型转换.

句型转换.
1.When he arrived ,everyone felt surprised.
______ ______ was a big surprise to everyone.
2.The students walked out of the classroom one after another.
The students walked out of the classroom ______ ______ ______.
3.They knew everything only after you told them.
They knew ______ ______ you told them.
单项选择.
1.Could you tell me ______?
A.what happened to him B.what did he happen
C.what did he happen to D.what he happen
2.Where ______ you ______ this winter holiday - To Sydney .
A.do;go B.are;go C.do;going D.are;going