Topic: Group verb,

Best Answer Explained in Below-:

The correct answer to the question "You must get into the mosque after taking your shoes -----." is B) off. This choice is appropriate because taking off one's shoes is a customary practice in many religious and cultural contexts, particularly in mosques. The act of removing shoes symbolizes respect and cleanliness, as individuals enter sacred spaces.

Option A) "on" fails to make sense because entering a mosque with shoes on contradicts the established etiquette. Option C) "without" might suggest going in without shoes, but it sounds awkward in the context of the sentence, which clearly requires an action verb. Lastly, option D) "with" implies that one would enter the mosque while still wearing shoes, which is again against common practice.

Thus, "off" not only fits grammatically but also conveys the necessary cultural understanding that shoes must be removed before entering a mosque, making it the most logical and correct choice.