-- It’s a pity that you missed the lecture on nuclear pollution. -- I _________ it, but I was busy preparing for a job interview.
—You _____ a meal this evening. I had dinner at a restaurant with Tom. —Well, why didn’t you phone me and let me know?
Water, which seems so simple and common, is _____ makes life possible.
_____ she heard the news that she won a scholarship, she was very excited.
American President Obama, together with some members of his government, _____ going to visit China next month.
_____ in the iron cage of the zoo, the tiger got quite angry.