Một chủ quán cà phê thống kê doanh thu như sau: - Tháng 2/2021, trung bình mỗi ngày bán 30 ly cà phê đen và 25 ly cà phê sữa nên thu được 17640000 đồng - Tháng 3/2021, trung bình mỗi ngày bán 35 ly cà phê đen và 20 ly cà phê sữa nên thu về được 19440000 đồng Tính giá tiền một ly cà phên đen và một ly cà phê sữa biết giá không đổi trong hai tháng; các ngày chủ nhật quán đều nghỉ bán (ngày 1/2/2021 và ngày 1/3/2021 là thứ Hai).

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hộ mình với * Practice. Find one odd word A, B, C or D. 1. A. watching TV B. playing games C. collecting D. cartoon 2. A. paint B. listen C. take D. flower 3. A. cycling B. music C. skating D. climbing 4. A. pottery B. photo C. love D. wood 5. A. gymnastics B. camping C. fishing D. horse-riding II. PHONETICS: 1. Read the words, put them into the column /ə/ or /ɜː/ according the underlined part. camera bird learn first final culture natural heard sir girl signal birthday again word world yesterday neighbor turn third assistant 2. Find the word which has different sound in the underlined part. 1. A. bird B. girl C. first D. sister 2. A. burn B. sun C. hurt D. turn 3. A. nurse B. picture C. surf D. return 4. A. neighbor B. favorite C. culture D. tourist 5. A. hobby B. hour C. hotel D. hot II. Find the word which has a different sound in the underlined part. 1. A. prefer B. better C. teacher D. worker 2. A. bear B. hear C. dear D. near 3. A. collect B. concern C. concert D. combine 4. A. absent B. government C. dependent D. enjoy 5. A. future B. return C. picture D. culture III. SKILLS- PRACTICE 1. Choose the correct answer A, B, C or D to fill each blank in the following passage. My favourite hobby is coin (1) . It is also one of the oldest (2) of the world and is also called 'hobby of the Kings', as in the old times, it was only done by kings and elite class of the society. It started for me some years back when my father used to come back (3) his foreign tours and give me coins of (4) countries. I started collecting them in my money box and after that I always used to wait for my new coins as much I used to wait for my father. Since then, it has become my favourite hobby. This hobby has given me information about different countries of the world. I feel extreme pleasure in (5) my collection to (6) . It has also taught me this lesson that A LIFE (7) A HOBBY IS JUST (8) FOOD WITHOUT SALT. 1. A. collecting B. collection C. collected D. collectors 2. A. hobby B. hobbies C. game D. games 3. A. after B. in C. from D. of 4. A. other B. different C. unlike D. diverse 5. A. showing B. show C. shown D. to show 6. A. other B. another C. others D. person 7. A. with B. about C. without D. of 8. A. as B. like C. if D. likes