key; lock; key (to a problem, success, etc.); clue
this sort of; this kind of; like this; such
dear (old); fondly remembered; beloved; missed; nostalgic
being together; going together; matching (clothing); going together
so much; so often; oh, yes!; that's it; that's right; quite
when; at what time; how soon; normal times; ordinary days
was it?; I think it was ...; if I've got it right; (I, we) used to ...; I remember ...; it was ...