His failure made his father think him a ___________ boy.

—That was a           question, How did you get it right?—I just tried my luck

From his _______look, I could see that he didn’t believe what I said.

Though measures have now been taken to prevent further price hikes, many people remain _______ over the rising cost of food. 

—The guard keeps         watch at the gate.—So he does. Only those         knows well could be let in.