I want to go shopping ______ some new clothes for my cousin.

We can never expect____ bluer sky unless we create _____ less polluted world.

The machine I have looked after for twenty years is still working well.

It doesn’t often snow in my hometown in winter, but it ___be rather cold sometimes. [ ]

Recentlyour class held a fierce ________ as to whether to raise the price of schoolmeals or not.