0 Normal: it used to be the theme. 02br 00My only guess would be "Over the Rainbow", and that's too obvious to be correct. 0-
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AnonymousWhat did you mean, when you wrote "(not in the same clause)"?I meant that the didn't and the used to idiom were in different clauses. Therefore the used to doesn't change to use to.
Anonymous Or are both of them wrong?Many dictionaries* consider both of them right. The underlying idea is that even though used with its ed ending looks like an ordinary past tense verb, usage has not settled and two forms are acceptable with the auxiliary do: