Question : Fill in the blank with the most appropriate option.
Don't you be clever with me, boy! I want to know what you're really ______.
Option 1: on to
Option 2: up to
Option 3: in to
Option 4: up about
Correct Answer: up to
Solution : The correct choice is the second option.
Explanation: The phrase up to is used to inquire about someone's intentions, actions, or plans. It implies suspicion or curiosity about the person's actions or plans. It suggests that the speaker is challenging the person to reveal his true intentions.
So, the correct sentence would be: "Don't you be clever with me, boy! I want to know what you're really up to ."