Do you think (that) zoos are good or bad for animals)?
In my opinion, . . .
It's my opinion that . . .
I think (that). . .
I don't think (that) . . .
I believe / don't believe (that)
Zoos are good because . . .
Zoos are not good because . . .
I agree (with you). I think that . . .
I disagree (with you). I think that . . .
Click to read some interesting opinions :
Which Side of the Zoo Debate are You On?
See videos discussing both sides of the zoo debate :
Zoo Debate 1
Zoo Debate 2