. With mobile phones, it’s easier to communicate with people because you can __________them almost any time .

下列各句中，没有语病的一句是（ ）

When a disaster occurs, all people, ________ they are old or young, rich or poor, try their best to help those in need

There will be _______ pollution and ________ buildings in 20 years .

Please call Peter___985-6228.—OK.