R is a voiced consonant, isnt it? I think you only use t when it ends in an unvoiced consonant, like k/s/p etc
These are the letters in SoFT KeTCHuP. I find it an easy way to remember. But the Dutch and Belgian children learn 'TKoFSCHiP
I thought it was 'heeft gebeurd' or is this one of those verbs that can use zijn and hebben as auxiliaries?