【单选题】

THE、BIG NUMBER

The country’s demand for telephones, mobile phones, faxes and the Internet is growing at an increasingly fast rate. In fact, it is growing (29) quickly that our telephone numbering system needs re-organizing (30) some major changes will have to (31) made.
These changes, (32) , will make the system simpler and easier to use. It is (33) an important task that all the UK phone companies are working together to make (34) changes. The changes will (35) only make hundreds of millions of new numbers, but they will (36) bring order and flexibility to the system for years to come.
(37) main changes are due to happen (38) now and the year 2006, which will give you (39) of time to prepare. You will find details of the number changes on our website, (40) you can visit any time at www. numberchange, org, or call our free phone helpline on 800—820—7713.
A．and
B．with
C．before