Exercise 4: Fill in the blank with a suitable preposition. 1. I need you to explain _______ Mary the lesson. 2. It's a bad problem, so you should do something _______ it. (to resolve something) 3. I thought _______ you when I heard that song. 4. They are thinking _______ going to Nha Trang for holiday. 5. I'm sorry to hear _______ your accident. 6. He blamed me _______ the accident. 7. He blamed the accident _______ me. 8. They will provide us _______ all the necessary information soon.