Multiple choice Directions: Fill in the blank. Mrs. Indira was blind ……… the shortcomings of her son. to of off for Reveal answer Fill a bubble to check yourself A Correct answer Explanation 'Blind to' is the correct idiom meaning unaware of or unable to see something. Mrs. Indira was unaware of her son's shortcomings. 'Blind of', 'blind off', and 'blind for' are not correct English expressions.