Read the passage and choose the best answer A, B, C or D (2 ms) People usually sing because they like music or because they feel happy. They express their happiness by singing. When a bird sings, however, its song usually means much more than that the bird is happy. Birds have many reasons for singing. They sing to give information. Their songs are their language. The most beautiful songs are sung by male birds. They sing when they want to attract a female bird. It is their way of saying that they are looking for a wife. Birds also sing to tell other birds to keep away. To a bird, his tree or even a branch of a tree is his home. He does not want strangers to come near him, so he sings to warn them. If a bird cannot sing well, he usually has some other means of giving important information. Some birds dance, spread out their tails or make other signs. 1. People sing because ……………... A. She feels happy B. they don't love music C. they want to tell a story D. they know many songs 2. What is one of the main reasons why birds sing? A. They are in a bad temper. B. They want to give information. C. They are sad. D. They can sing many songs. 3. Which birds sing the most beautiful songs? A. Male birds. B. Young birds which attract male birds. C. Female birds which attract male birds. D. Female birds. 4. According to the passage, a bird sings ……………... A. to stop sadness B. to tell strangers to keep away C. to warn about the approach of people D. to tell other birds to come quickly 5. What is birds' language? A. Their information. B. Their songs. C. Their singing. D. Their male birds. 6. Most birds usually ……………..if they cannot sing well. A. give information in another way B. warn other birds to go away C. find a wife D. fly in the sky 7. Where is the home of a bird? A. A tree or branch of a tree. B. Everywhere C. On the ground. D. By the river. 8. What is the main of the passage about? A. People like music. B. People or birds sing for many purposes. C. Birds like music. D. Birds only sing for fun. tìm cả dẫn chứng nữa ạ