—If you're free tonight, I'd like to invite you to a movie.—That's nice of you, but are you________?
. --- Do you think we can get there on time? --- Yes, ____________ the car doesn’t break down.
. --- It is said that you have given up your job as a secretary. Why? --- The salary is OK, but I have got ___________ nothing in the office all the time.
. When he was young, he used to __________ hard at his lessons.
. --- What do you think our guests ___________ be doing at the moment? --- They must be enjoying themselves at the party.
. Only in this way ______ our goals.