Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you: I'd like to announce... we're not having one baby, we're having two (つ) babies!
I bid farewell to my girlfriend.
Koichi announced to his employees at today's morning meeting that he would be hospitalized for hemorrhoids from tomorrow on.
Viet told Koichi that Mami is much weirder than everyone imagined.