cần đáp án, ko cần giải thích ạ Câu 1. Số gồm 9 trăm và 9 đơn vị là số: A. 909 B. 99 C. 990 D. 999 Câu 2. Có bao nhiêu số tròn trăm lớn hơn 500 A. 2 số B. 5 số C. 3 số D. 4 số Câu 3. Bảng lớp hình chữ nhật có chiều dài 4m, chiều rộng 2m. Chu vi bảng là A. 8m B. 42 m C. 6 m D. 12 m Câu 4. Số lớn là 54, số bé là 9. Vậy số lớn gấp số bé A. 54 lần B. 9 lần C. 6 lần D. 4 lần Câu 5. Cho dãy số: 9; 12; 15;...; ...; ... Các số thích hợp để điền vào chỗ chấm là A. 18, 21, 24 B. 16, 17, 18 C. 17,19,21 D . 18, 20, 21

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EXERCISE 2 1. “We can’t understand these words,” Peter said. Peter said that 2. “I did the thing without any difficult,” She said. She said that 3. “Your English will improve very quickly,” he said. He said that 4. “The secretary hasn’t finished typing the letter yet,” he said. He said that 5. “We are not teachers,” they said. They said that 6. “I will visit you tomorrow,” he said. He said that 7. “I have read this story several times,” she said. She said that 8. “It takes me two hours to read this minutes,” he said. He said that 9. “They cancelled the match yesterday,” he said. He said that 10. “They are reading a book now,” she said. She said that EXERCISE 3 1. “I have been to Paris,” Mary said. Mary said that 2. “I jog around the lake in the morning,” she said. She said that 3. “We are watching TV tonight,” they said. They said that 4. “We like drinking coffee at night,” they said. They said that 5. “He gave up smoking last year,” she said. She said that 6. “I had my father repaired this car,” he said. He said that 7. “She will finish her homework next week,” he said. He said that 8. “We were walking when we saw the terrible accident,” they said. They said that 9. “I have been studying Japanese for five years,” he said. He said that 10. “I had met her before I spoke to you,” he said. He said that EXERCISE 4 1. “If I had money, I would have lent you,” she said. She said that 2. “The sun goes around the earth,” he said. He said that 3. “She has been here since you left for Thailand,” he said. He said that 4. “I have to leave the party before 9:00 P.M,” he said. He said that 5. “You must present the topic naturally,” he said. He said that 6. He made a wonderful speech last week,” they said. They said that 7. “They have built her house since last year,” he said. He said that 8. “She can speak English,” They said. They said that 9. “They behaved badly last night,” she said. She said that 10. “She was absent from school because of her illness,” the teacher said. The teacher said EXERCISE 5 1. “They didn’t listen to the music last night,” he said. He said that 2. “He doesn’t want to eat fish,” she said. She said that 3. “We avoided meeting him three days ago,” they said. They said that 4. “I am helping my father paint this wall,” he said. He said that 5. “By the time he arrived, we had left the room,” they said. They said that 6. “They are making much noise,” he said. He said that 7. “He can’t take up this game,” she said. She said that