1 * Choose the correct option: a or b. 1 A person who is not affected by a disease is b infectious. a immune. 2 If you are going to sneeze you should use ... b a tissue. a hand sanitizer. 3 When you recover, you ... b get better. a keep away. 4 When you give a cold to someone, you ... b avoid it. a pass it on. 5 If you stop something from happening, you ... b spread it. a prevent it.