Choose the correct options to complete the sentences

The first/one/1th day of the week is Monday.

1. [Were|Was|Weren't] she at school last Friday?
2. I liked this film, it was so [boring|interested|interesting].
3. Mike and James [was|were|wasn't] in the garden 2 hours ago.
4. We're going to the conference on the [2st|2nd|2rd] of December.
5. Were they tired? — No, they [weren't|were|was].