It was April 1st, so I decided to play a practical joke. I had lessons in my favourite class number 7. It was also place that gives me happiness because I got the best marks in it. I and my friends wanted to play a practical joke on the occasion of April Fool's day.

We always have fantastic idea when we are together. So we decided to do something funny to laugh our generally sad teach. During the lessons she informed us that she need to go out because she has got a small problem. She told also that she will be back soon.

We didn't have a lot of time, but we were decided what to do. I and my friend Michael went to blackboard fastly and we wrote: ABDUCTION. It was lesson of English so there was only few students in the class. We hid to the wardrobe and we were waiting for homecoming our lovely teacher. When she arrived to the class she was screaming because she believed in our "silly" joke. For a short time we had unpleasantness in school. However, there is no substitute teacher faces screaming.

Tham khảo nhé!

Being a typical student, Thuy Dung knew she would have to come to a decision soon. At the school, she was surprised that she have to came to a decision. Thuy Dung is an kind student from Vietnam who is became a typical student in class. Duong is her best classmate, after Duong surprising that she become a typical student. He doesn't know how did Dung become like this. When Dung came into class that when Phong and Phuong was written Headbook about the situation of the class in last weekend together as they could.

Dung saw Phong surprised with something that he looking. When Dung just does to clean the board before Mrs Giang came in. she, Phong and Phuong found that Linh been bullied by Tuan. "Dung, clean the board before Mrs Giang coming in class. With Tuan bullied Linh, so Mrs Giang can handle this" Phong said. Accepting Phong's words, Dung continued to cleaned the board. And 20 minutes later, Mrs Giang coming and seen the board was been cleaned and she asked who cleaned the board. Phong answered to her that Dung already cleaning it before she came in and he told her about Tuan bullying Linh. And Tuan was brought to the principal's office for trial

Then next morning was time to salute the flags of all classes in school. Dung was sat between Phong and Lan, Phuong sat in front of Linh. Also Phong has French girlfriend and her name is Emily, Emily sat behind him. Also there have 1 girl from Germany joined and her name is Cìndy also Cindy is Linh's German friend sat between Linh and An but Linh was sat infront of Lan and behind Phuong. Cindy and Emily surprised that they meet Binh and An when this school event still starting

After that, Emily and Cindy met Dung at middle of school and they said that this school event so interesting that they never seen it in Vietnamese school. As soon as Phong, Phuong, Lan, Binh, An and Linh was came arrived early. They was same school, but different class. But Cindy and Emily have to flew back to their country where they lived. Even though they had to leave Vietnam, But Cindy and Emily still remember the Vietnamese students included Dung they used to meet

Đáp án D

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Câu điều kiện loại 3: If S had PII, S would have PII dùng để chỉ điều kiện không có thật trong quá khứ.