be left hanging (in the air/in midair)

To remain unresolved or unaddressed. I don't think he's very knowledgeable on this topic—my very basic question was left hanging in the air.

Name	Pronounced	Usage
Tawny	TAW-nee	English (Modern)
Vreni	FRE-nee	German
Walters	[.wɔ:ltəz]
Branimira	-	Croatian, Serbian, Bulgarian
Vargas	['wa:gəs]
Tom (2)	-	Hebrew