Yes, you are right. It was a slip of the pen.I think you don't need the comma after "cooked", Sophia. Deleting that comma would improve the sentence and remove the ambiguity, if there's any, by relating "together" to all the three activities more closely, I feel.
Hi, Thank you for your reply. I feel confused because:"Which were our happiest moments" refers to the moments you spent doing the things in your list: shopping, cooking, and gardening.
Your use of "which" seems reasonably clear to me.
Thanks. I understand it now.Hi. You're welcome.
You did not use "moment" in the first clause. Nonetheless, those events can be viewed as "moments". Apparently, you viewed them as moments because you told us that those activities were your "happiest moments." That seems reasonable to me.