Is "boring" an adjective?

Yes, in the main, I suppose it is. But it could also be a regular verb - "termites are boring through the floorboards" - and subsequently a derived gerund too - "We estimate that boring occupies four-fifths of the termite's waking life."

Kath, Laura and I went through the seven main parts of speech in my classroom bedroom. Noun, Pronoun, Verb, Prepostion, Conjunction, Interjection, Adverb, Adjective. I gave examples, and then invited Kath and Laura to complete a couple of exercises. The lesson went well, but it went on and on too. We stopped for chips.

Hopefully the grammar will equip us well for our TESOL interviews. It's me on Thursday, and then the ladies on Friday. Good luck to us all!