How do you pronounce 'll and 've in a sentence?

In English, the apostrophe (') represents an abbreviation; if the end of the abbreviation is printed, such as 'll and 've, you pronounce the apostrophe as a glottal stop. A glottal stop feels like a catch in your throat, and sounds like the middle sound in uh-oh, or the way you probably say "mitten" without any /t/ sounds. The IPA symbol for this sound is ʔ.

The IPA for each would be:

ʔl

and

ʔv