After "t" and "d" sounds, the suffix is pronounced as such - kind of "id", with short like in "lid". After voiceless sounds (sh, ch, s), is pronounced as "t", while after voiced sounds (n,m, z) it has to be pronounced as "d". Notice I wrote SOUNDS.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.