The answer to 1 is imagery because the description helps us to better see the thrush through its use of adjectives. The answer to 2 is sight, because we see gray rather than feel gray. The answer for 3 is "is" because "dictionary" is a singular noun, not a plural noun. There is only one dictionary. The answer to 4 is "was" because "tourist" is a singular noun, not a plural noun. There is only one tourist. The answer to 5 is "was" because there is only one Statue of Liberty. It is a singular noun. Remember, the general rule for singular/plural nouns is that plural nouns are usually attached with an "s" at the end. Although there are exceptions, it helps with most nouns.
They believed illness was caused by supernatural beings. It was believed that if people were disobedient, the gods would inflict their bodies with sickness or disease