If you have time tonight，I’d like to invite you to a ball.　-That’s very nice of you，but are you ____?

Peter looked tired and a little absent-minded in class． —He _____ too late．

It was the culture, rather than the language, ____made it hard for him to adapt to the new environment abroad

_________ the final exams, I would have gone to the concert yesterday

_________ TV do you watch every day —-Less than two hours.