last

THE can't be merely an option. It needs to be used in that sentence.

Have you any problems about the last lesson/lecture?

Tsar at the first glance I agree the WB needs the "the"

However the choice depends upon the context. The "the" implies the very last, or the "last last." If however, the reference is the general subject of the lesson/lecture then the "the" could be omitted

The clarification

http://able2know.org/topic/231548-1

But won't you say this?:

-Last lesson/lecture, we talked about...

How come THE is not used?

WB that's really a good q and I don't have the foggiest notion. With BSJ and after a life as a writer I'm continually amazed by such advanced queries of the typical esl

Big help I am

So I asked my Better Half, who is much smarter than I, and she said that perhaps "The" makes the matter less personal affair of the speaker, very subtle distinction

Does it? Consider:

The last time I saw you, you had a beard. (Here 'the' is optional.)

The last time I saw Joe was the day before he was murdered. (Here 'the' is required.)

Thanks Con, I shall have to consult my BH on the issue