Multiple choice softskills communication To knock one`s head against a brick wall Something that is ordinary or usual. To waste time trying to do something with little or no success. To be near to someone`s personal feelings, wishes or interests. NA Reveal answer Fill a bubble to check yourself B Correct answer Explanation This idiom means wasting effort on something futile - like physically hitting your head against a wall achieves nothing. Option A is about ordinary things, not frustrated efforts. Option C is about emotional closeness.