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1. We celebrated this holiday.
2.The costumes were wonderful.
3. I sent many greetings cards to my friends yesterday.

1)We didn't celebrate this holiday.

Did we celebrate this holiday?

2)The costumes weren't wonderful.

Were the costumes wonderful?

3)I didn't send many greetings cards to my friends yesterday.

Did I send many greetings cards to my friends yesterday?

We did not celebrate this holiday. Did we celebrate this holiday?
The costumes werent wonderful. Did the costumes be wonderful?
I didnt send many greetings cards to my friends yesterday. Did i send many greetings cards to my friends yesterday?