It is ___________ the customers’ needs that has made chain stores so popular in big cities in China.

nd has decided to begin building its first standard-gauge railways in cooperation with China, ______may cost $12.2 billion.

I haven’t got ____ nails to mend the cupboard.I need another three.

No one would have time to read or listen to an account of everything ______ going on in the world.

The argument remains extremely heated ______ it is worthwhile for China to open its door to foreign cars.