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2 năm trước
C6 : Hãy chọn từ thích hợp để điền vào chỗ trống sau: (mềm , cứng , nhẵn , gồ ghề) a) Các vật phản xạ âm tốt là các vật ................. và có bề mặt ................... b) Các vật phản xạ âm kém là các vật ...................và có bề mặt ........................ ⇒ Hứa Vote 5* và cho ctlhn nha
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Bài 2: Khoanh tròn dạng đúng của động từ ở thì quá khứ đơn hoặc quá khứ hoàn thành sau cho phù hợp với ngữ cảnh câu 1. The robbers left/had left the bank when the policemen finally arrived/had arrived. 2. When the rain started / had started, the Atkinsons finished / had finished planting trees. 3. By the time Rebecca went /had gone into the store, she got/had got soaked. 4. Darcey saw / had seen this castle before she ame / had come again last Sunday. 5. Mr.Palmer didn't speak /hadn't spoken any Chinese before he moved / had moved to Peking. 6. Sonny got/had got fainted by the time the ambulance reached / had reached the hospital. 7. When my mother brought/ had brought me an apple, I finished / had finished my homework. 8. Mrs.Wilkinson refused / had refused to drive the car because she had / had had a terrible accident on the highway about a year ago. 9. I didn't think / hadn't thought of having a new house before I saw / had seen that ad on TV. 10. My uncle didn't try / hadn't tried Italian food before went / had gone to that restaurant. II

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