2) I suppose basketball is an exciting game. (O)
3) I don't think so either. (A)
4) I'm afraid I have to disagree. (D)
5) I couldn't agree more. (D)
6) I don't agree with you. (D)
7) I think this music is too loud. (O)
8) I believe our new teacher is friendly. (O)
9) You're absolutely right. (A)
10) Yes, I agree. (A)
11) I think so, too. (A)
12) In my opinion, this task is too difficult. (O)
13) That's not entirely true. (D)
14) I'm not so sure about that. (O)