MCQ Practice English 📖 Choose the correct preposition to fill in the gap : We must discourage people ---- throwing trash in public places. Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up This question appeared in DU KHA Unit Question Bank English 2015-16 Question 12 DU KHA Unit Question Bank English 2015-16 Question 12 DU KHA Unit Question Bank English 2015-16 Question 12 DU KHA Unit Question Bank English 2015-16 Question 12 PreviousChoose the correct preposition. The table is --- the middle --- the room . NextCredit Tk. 500 ..... my account.