Computers are now as commonly used in business as the telephone．Therefore，it's important that people know how （46）　　 them efficiently．Now，you and your whole team are（47）　　to do this on your computer in the simplest way﹣﹣﹣taking our online courses．And then you can learn and practice （48）　　 yourself．

The person（49）　　 appears on the screen acts as your teacher，guiding you through the tasks （50）　　explaining everything．Then more difficult exercises allow you to practice the things you（51）　　learned and test your understanding．

（52）　　courses are excellent value﹣only 69.99 pounds．You（53）　　save yourself money if you buy the complete collection of seven courses．This is now available at the retail（零售）（54）　　of 410 ponds．You can make a（55）　　saving of 10% by ordering the complete collection within the next thirty days．

46．A．to use	B．use	C．using	D．used
47．A．able	B．unable	C．ably	D．disable
48．A．to	B．in	C．by	D．on
49．A．which	B．who	C．what	D．whom
50．A．or	B．but	C．and	D．nor
51．A．had	B．have	C．has	D．having
52．A．These	B．Each	C．Every	D．Either
53．A．must	B．ought	C．need	D．can
54．A．money	B．worth	C．shop	D．price
55．A．far	B．further	C．close	D．closer