也要解释He didn it stay up late last night.- A;So did i B;So wil

也要解释He didn it stay up late last night._ A;So did i B;So will i C;So i am
David has made great progress recently_,and_.
A;So he has ;so have you   B;So he has;so you have     C;So has he;soyouhave
Yao Ming works hard on his English and_
A;so Liu Xiang does   B;so is Liu Xiang    C;so does Liu Xiang
I hear Yang Yan made an English  speech at the graduation cermony yeaterday
_,and_.
A;So she did;so did i    B;So did she;so i did   C;So she was;so i was
—It is terribly cold today,isn't is?
—Yes,_yesterday.
A;So it was     B;So was it    C;It is so
Our country is becoming richer and richer,_
A;So it is    B;So was it    C;It is so