If you're confused about how much water you really need, I'm not surprised.

The teacher explained this problem to me many times, but I didn’t understand and I am more and more confused.

I was confused because he had already given me my gift.

In America we were confused because we couldn't read.

While our ad system has powerful features, it is also complex, and can confuse many small and local advertisers whose products and services could be very useful to our users.