Trong kì thi tuyển sinh vào lớp 6 trường chất lượng cao ở một trường THCS có 480 học sinh dự thi.Kết quả số HS làm bài đạt loại Giỏi chiếm 6.25% số HS dự thi bằng 1/4 số HS làm bài đạt loại khá. Còn lại là số HS là bài đạt loại trung bình. a) Tính số HS mỗi loại. b) Tính tỉ số phần trăm của số HS làm bài đạt loại giỏi và khá so với số HS dự thi.

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15.1. Read the situation and write sentences from the words in brackets. 1. You went to Sue's House, but she wasn't there. ( she/ go/ out) ......................................................... 2. You went back to your home town after many years. It wasn't the same as before. ( it/ change/ a lot) .................................................. 3. I invited Rachel to the party, but she couldn't come. ( she/ arrange/ to do something else) ................ 4. You went to the cinema last night. You got to the cinema late. ( the film/ already/ begin) .................................... 5. It was nice to see Dan again after such a long time. ( I/ not/ see/ him for five years) .......................... 6. I offered Sue something to eat, but she wasn't hungry. ( she/ just/ have/ breakfast) ............................... 15.2. For each situation, write a sentence ending with never...before. Use the verb in brackets. 1. The man sitting next to you on the plane was very nervous. It was his first flight. ( fly) ......................................................................... 2. A woman walked into the room. She was a complete stranger to me. ( see) I ........................................................ before. 3. Sam played tennis yesterday. He wasn't very good at it because it was his first game. ( play) He ................................................................ 4. Last year we went to Denmark. It was our first time there. ( be there) We ........................................................