WRITTEN TASK: The incomplete sentences below show either comparison or contrast. Select and write the appropriate transition word that completes the idea of each sentence.

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both , while , likewise , unlike , in contrast <= answers
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1. Bacteria can live inside or outside the body _____ viruses need a host to survive.
2. ______ in bacterial infection, antibiotics won't work in viral infections.
3. Both Bacteria and viruses cannot be seen with the naked eye. _________, these microorganisms are capable of using mild to serious infections.
4. _______ to viruses, most bacteria are not harmful. In fact, we have bacteria that helps in food digestion.
5. Medical treatment _______ bacterial infections and viral infections must be upon the advice of a doctor.