Choose the correct ending for each sentence.
1. Gates dropped out of university...
2. Computers quickly became popular...
3. People can communicate more easily...
4. Critics say that good marketing...
5. Microsoft software is sold with nearly every new computer...
a. 3 because of the Internet and e-mail.
b. 5 even though there are often problems with it.
c. 1 because he wanted to develop software.
d. 2 due to Gates's software.
e. 4 is the reason for Microsoft's success.