cho phương trình 4x+3y=2 Viết công thức nghiệm tổng quát của phương trình trên.

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Part III. GRAMMAR Exercise 6. Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions. 66. People in ____ Western countries are often surprised to learn that ____ Japanese celebrate Christinas. A. Ø - Ø B. the - the C. the - Ø D. Ø - the 67. In Japan, ____ most important holiday of ____ season is New Year’s Day, which comes one week after Christmas. A. the - the B. Ø – the C. the – Ø D. the – a 68. In India, in the old days, ____ girl’s family used to give ____ boy’s family a gift like money or jewellery. A. a – a B. a – the C. the – a D. the – the 69. It is appropriate to bring ____ small gift when visiting ____ home in the U.S. A. the - a B. a – a C. a – the D. the – the 70. Traditionally, ____ bride and groom go on their honeymoon immediately after ____ wedding reception. A. a - the B. the – a C. the – the D. a – a 71. Whenever I set out for ____ examination, I always try to avoid crossing ____ path of ____ woman. A. an – the - a B. an – a – the C. an – the – the D. the – the – a 72. In a wedding ceremony, ____ best man helps ____ groom ready for every preparation. A. the – a B. a – the C. the – the D. a – a 73. People say that ____ gift lets ____ recipient know how we are thinking of them. A. the - the B. a – a C. the – a D. a – the 74. Wearing a wedding veil which covers ____ head and face is ____ 2,000-years-old tradition. A. a - the B. the - a C. the - the D. a - a 75. In the U.S, while represents goodness and is usually ____ color of ____ bride’s wedding dress. A. a – a B. a – the C. the – a D. the – the 76. Is is acceptable to touch ____ person on ____ shoulder in a conversation? A. a - the B. the – the C. the – a D. a – a 77. ____ man should take off his hat when he goes into ____ house in the UK. A. A – the B. A – a C. The – a D. The – the 78. W hen you stay at ____ friend's house, you should write ____ thank-you note. A. a - a B. the - a C. a - the D. the - the 79. Christmas Eve is ____ best time for Japanese youngsters to go out for ____ special, romantic evening. A. a - a B. the - a C. the – the D. a - the 80. ____ Japanese manage not to ask direct questions in order not to embarrass ____ person who they are speaking with. A. A - the B. A - a C. The - the D. The - a