–Does it matter if I give it up this time?-- It ____if you do. You won’t have ______chance.

--Can you let these new graduates take on the task?---I’m afraid not. While they are energetic and ambitious, ____of them seems to be suitable for this demanding job.

Many people like to talk about generation gaps. I don’t think there is       in my family, though.

Mr Smith is at the door. _______ wants to see you.

 The cost of oil is less than _______ of gas.