1. If they burn the garbage, it will ... unpleasant odor. A. give off B. run off C. give out D. carry out 2. I listened to him carefully ... understand what he said. A. so that B. in order for C. in order to D. so long as 3. Do you know how to ... a sore throat? A. pain B. treat C. cure D. relieve 4. He said that he had finished his duty ... A. the following day B. the day before C. last year D. the following week 5. On the ... to the countryside there are a lot of bridges. A. path B. lane C. street D. way có giải thích ạ, giải thích ngắn gọn thôi cũng được ạ