□ あなたの意見に賛成です。 

I agree with you.

I completely agree.

I agree with you 100% on that.

 

□ 大賛成です。 

I couldn’t agree with you more.

 

□ 反対のしようがありません。

I have to agree.

 

□ その通りですね。

That’s right.

That’s exactly right.

Definitely.

I think you are exactly right.