A:1
B:-1
C:i
D:−i
--- Is that man Mr. Smith?
--- It ______ be him. He has gone to NewYork on business.
Here are your clothes. ________ and we must go now.
明皇李隆基“以姚崇、宋璟为相,廓清武后则天以来之积弊,励精图治。至民夜不闭户,道不拾遗,遂达臻全盛。”这里的“明皇”所创造的治世是指( )