Wenzhounese progressive aspect marker and 'at, in'

[Nightcap 4]

What is the Wenzhounese equivalent of 在 for both the progressive aspect and the 'at, in' meanings? Wiktionary says 是 for the latter but there's nothing in 溫州話方言詞典 about it. 谢谢

[Michaelyus 271]

是 and 宿 are both used for the at/in meanings, according to ChaZiDian.com.

 

The use of 在 or any other marker before the main content verb is as far as I know not present in Wenzhounese; the use of 搭 or 是搭 suffixed to the verb seems to be standard.