Help me :) These two sentences make me confuse :(

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English

May 7, 2012 08:43

We (were not understood/haven't understood) the present perfect last year, but we understand it now.

I got a bad grade on my paper because I (haven't given/wasn't gave)

felix888

May 7, 2012 08:47

Help me :) These two sentences make me confuse :(
Help me :) These two sentences make me confused :(

We (were not understood/haven't understood) the present perfect last year, but we understand it now.
We (were not understood/haven't understood) didn't understand the present perfect last year, but we understand it now.