It is the most instructive lecture that I ________ since I came to this school.

I think we’ll give Bob a ring.– We ______ . We have been out of touch with him for ages.

I ________ you how to deal with the matter, but why didn’t you ask me?

Please tell me ______ last year.

Were you alone at home yesterday? — Yes, my children as well as my wife _____ invited to the party. [ ]