.Now all of our concentrtion is on _____ it is that the global environment will return to normal.

I want to go to college and become a doctor; _____ ismy wish.

Who studies , Annie or Lily—-Lily does. She is a top student in our class.

____ his happy look on the face, he must havepassed the exam this time.

下列各句中加横线词语的意思与现代汉语不同的一项是（ ）