Phân tích các đa thức sau thành nhân tử: a) xy +11x b) x2 + 4y2 + 4xy – 16

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Mình đang cần gấp ạ!!! I. Choose the best answer by circling A, B, C or D. 1. She was_______ to walk. A. too tired B. enough tired C. tired D. very tired 2. He isn’t _______ to lift that box. A. strong enough B. enough strong C. too strong D. strong 3. The boy was _______ to solve the problem. A. enough clever B. very clever C. clever enough D. too clever 4. The coffee was _______ to drink so I left it for a minute to cool. A. hot enough B. hot C. too hot D. cold 5. The room wasn't _______ so I turned the heating on. A. hot enough B. cold C. too hot D. very cold 6. I didn't buy the jacket because it was _______. A. big enough B. enough big C. too big D. so big 7. There wasn't _______ for me to finish the exam this morning. A. time enough B. little time C. too many time D. enough time 8. She can't sleep because she drinks _______ coffee. A. enough B. many C. too much D. very little 9. I left the job because I was making _______. A. too little money B. much money C. too few money D. a few money 10. The lesson _______ for me to understand. A. too difficult B. difficult too C. is too difficult D. is very difficult 11. The tent show is _______ for us to see. A. enough interesting B. very interesting C. interesting enough D. little interesting 12. They are _______ that they can’t buy a bicycle. A. enough poor B. poor enough C. too poor D. so poor 13. Are there _______ for everyone? A. food and drink enough B. enough food and drink C. enough of food and drink D. enough food and drink enough 14. Sarah speaks so _______ that I can’t understand her. A. fast B. fastly C. faster D. fastest 15. The coat is _______ for me to wear. A. too large B. very much C. too much D. so large 16. They are _______ young _______ drive the car. A. so/ that B. too/ to C. enough/ to D. not only/ but also 17. She is _______ to join the team. A. enough tall B. tall enough C. too tall D. short enough 18. My seat was _______far from the board that I couldn’t see my teacher’s writings. A. very B. too C. enough D. so 19. I'm _______ to attend class today. A. tired enough B. too tired C. enough tired D. not tired 20. There are _______ for everybody to watch the slide show. A seats enough B. enough seats C. too many seats D. too seats 21. The door is_______ the piano to go in. A. too narrow for C. narrow enough for B. enough narrow for D. narrow for 22. _______ he is very old, he can walk to the station. A. Because B. But C. Although D. Despite 23. Many people believe him _______ he often tells a lie. A. because B. although C. in spite of D. because of 24. _______ she was very hard working; she hardly earned enough to feed her family. A. In spite of B. Because of C. Because D. Although 25. _______ her poorness, she feels happy. A. Because B. If C. Although D. In spite of