An old saying occurred to me when I was about to take the give-away shampoo ______ there is_______ thing as a free lunch in this world.
I was nervous and pretended not __________, in order to leave a nice first impression on the interviewer.
I’m very grateful to Professor Smith, without __________ help I would have never have got this far.
My father warned me __________ going to the West Coast because it was crowded with tourists.
It __________ Tom that parked the car here, as he is the only one with a car.
Though he has lived in America for five years, he doesn’t intend to __________ American citizenship.