Clothing made of man-made fibers has certain advantages over ______ made of natural fibers like cotton，wool or silk.

---Are the Smiths living in the house alone ?--- Yes, although they have three sons, _____ of them live with their parents.

—This pair of shoes _______really small for me    —Why not try another _________.

I was disappointed with The Transformers 3, for I had expected _ to be much better.

(2013·新课标全国卷Ⅱ)It's an either­or situation —we can buy a new car this year or we can go on holiday but we can't do ________.