--It’s a pity that you didn’t come to my birthday party last night.--I’m terribly sorry. I ________ for an important lecture.
It is the third time so far that such a festival ________ in my hometown.
Mr. Johnson always carries a notebook, in which he ________ everything that happens.
— Have you finished your experiment report, Jane? — Oh, my God. I've ________ forgotten all about that.
The children of the farmer prefer _________ in bigger cities to _______ in their hometown.
He seemed to have ________from the terrible experience, and looked happier.