cho phân số a/21 a) tìm a với a là phân số nguyên tố để có thể rút gọn phân số trên b0 tìm tập hợp m các số tự nhiên a biết phân số đó là phân số tối giản < 1

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VI. Read the first text then complete the second text with the correct form of the verbs in brackets. Please write your answers in the LONG FORM. For example, hadn't => had not, wouldn't => would not. Text 1: IF ONLY... My day started off very badly because I didn't hear my alarm clock and I woke up late. I didn't have enough time to get ready properly and I forgot my homework and my lunch money. Then I missed the school bus and arrived late. Mrs. Smith was not pleased with me, firstly for being late and secondly for not having my homework. I was hungry because there had been no time for breakfast, but I couldn't buy a snack during the first break because I didn't have any money with me. Then the day got worse when I remembered that we were having a test. I hadn't done any revision because I was watching football until late, which is why I had trouble waking up this morning. Text 2: If George (1) _____________ (not watch) football until late last night, he (2) ____________ (not be) so tired this morning. If he (3) ____________ (not be) so tired, he might have heard his alarm clock. If he had heard his alarm clock, he (4) ____________ (get ready) properly. If he had got ready properly, he (5) ____________ (have) breakfast and (6) ____________ (not forget) both his homework and his lunch money. Mrs. Smith (7) ____________ (not be) angry with him and George (8) ____________ (buy) a snack during the first break. He would have done some revision if he (9) ____________ (not stay up) to watch the football. He wouldn’t have watched football if he (10) ____________ (remember) he had a test today and his day would probably have been much bette