sure

Tom is so talkative. I'm sure you'll soon be familiar _______ him.

He is quite sure that it’s _____impossible for him to fulfill the task within two days

Tom is so talkative. I'm sure you'll soon be familiar _______ him.

—I'm afraid his radio is too noisy. Will you please _____ him to turn it down?—Sure.

—          ? —Sure, it's 65250786.  

----Can I talk to you for a minute?   ----Sure. I have _________ time.