When a word ending with the /d/ or /t/ sound is pronounced and the next word starts with a consonant, the sounds /d/ or /t/ are silent. For example: I used to play tennis.
My question is related to the regular verbs. Consider:
I managed to do it.
If the /d/ sound is silent in this case, this then is like pronunciating I manage to do it. The context will decide if the tense is present or past.
Does this stand?