Answer:
1. Inference context clue
2. Make inferences about the meaning based on the words around it.
3. Having a hidden meaning.
Please read explanation to understand.
Step-by-step explanation:
1. You are assuming that someone sociable and friendly will have something fun to do, which isn't always the case.
2. Using context clues and how the word is used in a sentence you can make out the meaning of the word.
3. Cryptic refers to something that has a mysterious background; something that isn't what it seems. The statement refers to the teacher having hidden message within the questions of the test.