For number 6, the answer must be "see." The use for rulers is to measure. The two examples are related by the uses of the objects. Microscopes are used to see small things. For 7, a cheetah is a very fast animal, whereas a snail is a very slow one. The answer must be "slow." For 8, fearless and timid are opposites. This means that the answer needs to be the opposite of hazy, which would be "clear." Lastly, for 9, to justify and to defend are very closely related. For this question, we must find a synonym or something very close to the word deceive. The word "mislead" would be an appropriate answer.
