________hard you try,it is difficult to lose weight without cutting down the amount you eat. (2012·湖南,32)
Would it be ______ for you to pick me up at four o’clock and take me to the airport?
I would rather you did some reading while you are free, but you ______.
I don’t think ___ possible to travel around the world without any modern equipment.
I have a ______ to talk too much when I’m nervous.
There was never any time for Kate to feel lonely, _____ she was an only child.