Put in prepositions if needed. ... ten years ago telephone was the only... communication which people could ... their home ... present computers make... much more comfortable. Now we can ... each other ... fax, e-mail or nicate ... the Internet. Those who have ... ner can communicate not only... peo- ... cane ... information ... any library ... he world.

Here's the text with prepositions filled in, where needed:

... Ten years ago, telephone was the only means of communication which people could use from their home. At present, computers make life much more comfortable. Now we can communicate with each other via fax, e-mail, or through the Internet. Those who have computers can communicate not only with people at home, but can gain information from any library in the world.