Directions: Complete the following passage by filling in each blank with one word that best fits the context.

Research has become both simpler and more complex. It's simpler because,    1   you have a computer, you can find information you need by searching the Internet. For all your information, you don't have to go to   2   library to find the relevant resource and take notes on it. Instead, you can find some sources from the Internet   3   print the copies needed.Remember, however, that you should usually consult different types of sources. That is, you   4   always rely just on the Internet for your research.