giúp emmm vs ạ

Dựa trên các từ gợi ý bạn đã cung cấp, dưới đây là cách bạn có thể hoàn thành các câu: 1. Bicycles are quicker than walking, but buses are the quickest. 2. Trams are more convenient than buses, but taxis are the most convenient. 3. The underground is slower than buses, but motorbikes are the slowest. 4. Taxis are more expensive than buses, but trams are the most expensive. 5. Motorbikes are dirtier than bicycles, but cars are the dirtiest. 6. Bicycles are cheaper than buses, but walking is the cheapest.