---- What else do you think we should pay attention _________ our environment?
---- Sorry, I’ve no idea.
A.to improving | B.to improve |
C.to to improving | D.to to improve |
---- What else do you think we should pay attention _________ our environment?
---- Sorry, I’ve no idea.
A.to improving | B.to improve |
C.to to improving | D.to to improve |