Lúc đầu người anh hơn em số viên bi là:

   12-6=6(viên)

     Đáp số:6 viên

1 trong 2 ban dem sai

Câu hỏi với too/enough

1. She is so short that she can't reach the bookshelf

=> She is too short to reach the bookshelf

2. I can't drive a car because I am only 16 years old

=> I am too young to drive a car

3. That horse will never win the race because it doesn't run fast

=> That horse doesn't run fast enough to win the race

4. This grammar is very diffcult. A child can't understand it

=> This grammar is too difficult for a child to understand

5. The moon is very bright. I can read a book by it

=> The moon is bright enough to read a book

6. The music is very soft. We can't hear it clearly

=> The music is too soft for us to hear clearly

7. This mountain is very high, we can't climb it

=> This mountain is too high for us to climb

8. She is 6 years old. She can start going to school

=> She is old enough to go to school

9. The weather is quite bad. They are not able to have a picnic in the countryside

=> The weather is too bad to have a picnic in the countryside

10. The food is so hot. They can't eat it right now

=> The food is too hot to eat right now

11. The test is very diffcult so it takes students 2 hours to do it

=> The test is too difficut to take students...

12. Because the film is so terrible. He don't want to see it

=> The film isn't good enough for him to see

13. She has many friends. She feels very happy

=> She has friends enough to be very happy

1. Ann can't carry these suitcases because they're too heavy.

=> These suitcases aren't light enough for Ann to carry

2. The question is diffcult. We can't answer it

=> The question is easy enough for us to answer

3. He isn't allowwed to ride a motorbike because he is too young

=> He isn't old enough to ride a motorbike

4. They don't have much money. They can't buy these books

=> They don't have enough money to buy these books

5. The water is so dirty that he can't bathe his eyes

=> The water isn't clean enough to bathe his eyes

6. Are you sure that the tea isn't hot? Can I drink it?
=> Is the tea warm enough for me to drink?

Exercise 1: Give the the correct form of the word in brackets.

23. He postponed (make) ____making_________a decision until it was too late (do) ______to do______anything.

24. Try (forget) ______to forget_______it; It isn’t worth (worry) _____worrying________about it.

25. There is no point in (remain) ____remaining____in a dangerous place if you can’t do anything (help) _____to help______the people who have (stay) ______to stay_______ there.

26. The horse won’t be well enough (run) ______to run_______in tomorrow’s race. He doesn’t seem (have) ______to have_______recovered from his long journey.

27. At first I enjoyed (listen) _____listening________to him but after a while I got tired of (hear) ______hearing_______the same story again and again.

28. She is not eager (start) _____to start________her job.

29. Do stop (talk)______talking_______ I am trying (finish) _______to finish______the report

30. He tried (put) _______putting______on the shirt to see whether it fit him or not.

31. He wore dark glasses (avoid) ______to advoid being recognized_______. (recognize) _____________

32. I advised you (start) ______to start_______ (look) ________looking_____…. For a flat at once.

33. I can’t help (sneeze) ______sneezing______ I caught a cold yesterday from (sit) _____sitting________ in a draught.

34. He had to pay for the (break)______breaking_______ glass.

35. It’s very hot. I’d like (go) _______to go______ out for awalk.

36. Those boys are very lazy. They feel like (play) _____playing________all the time.

37. Most all people would prefer (live) ______to live_______ in the country.

39. I prefer (drive) _______driving______ to (drive) ______driving_______.

40. He has failed in the exam, and he regrets (be) _____being________.so lazy before.

41. Try (forget) _______to forget______. It; it isn’t worth (worry) ________worrying_____about.

42. It took me along time (recover) _______to recover______from the shock.

43. She would rather (stay) ______to stay_______ at home tonight.

44. This test is not easy (do) _____to do________.

45. I heard them (talk) _____talking________about me when I entered the room.

46. They often go (swim) ______swimming_______ in the river nearby.

47. At first I enjoyed (listen) _______listening______. to him but after a while I got tired of (hear) ____hearing______ the same story again again.

48. Our teacher has promised (help) _______to help______ us (prepare) ______prepare_______… for the exam.

49. I have decided (allow) ______to allow_______. My friend (do) _____do_______ as she pleases.

50. He spends his free time (collect) ____collecting______stamps, he has taken up (do) _____doing_____ this for a long time.

51. Peter, I have something (tell)______to tell_______you.

52. I can’t imagine (not have) _____not to have________ a car.

53. If I have got a headache, why don’t you try (take) _____taking________ an aasprin?

54. We are arranged (meet) _____to meet_______out side the school at 4;30.

55. Have you ever considered (work) ______working_______as a teacher/

56. Harry says she doesn’t remember (meet) _____meeting________Sally before.

57. I really miss (play) _______playing______…. tennis as I used to.

58. The man showed me what (do) ______to do______in the village.

59. The teacher is busy (explain) _____to explain_______the plain.

60. The secretary still has some letters (type) ______to type_______

61. They needn’t (work) _____work_______that hard.

62. There are many questions (answer) ______to answer_______

63. There is no use (call) _____calling________him at this time.

64. He smelt something (burn) ______burning_______ in the kitchen

65. Because of heavy rain, they delayed (play)_____playing________ the match.

66. I had to ask the boys (stop) ______to stop_______ (make) ______making______ noisy.

67. The teacher recommended (do)_____to do______more homework but he was too lazy (take)____to take____his advise.

68. I looking forward to (see) ______seeing_______ you

69. He dreads (have) _____having________ to retire.

70. He urged us (work) ______to work_______ faster

Có số tự nhiên có ba chữ số là :

              ( 999 - 100 ) / 1 +1 = 900 số

        Số không chứ số 1 là :

            9 x 9 x 8 = 648 số 

       số chứ số 1 là ;

           900 - 648 = 252 số

                  đáp số : 252 số nhé bạn

Use the suitable forms of DO or MAKE to complete the following sentences :

1.A computer can ……....do...…simple calculations (phép tính) with lightning speed (trong nháy mắt)

2.The president of Hoa Minh Ward ………will make……....... a speech at the meeting tomorrow.(phát biểu)

3.The children ……………are making…….............….. too much noise outside the house now.

4.She ………does.......… the ironing every night. 5. I …….do.……. my shopping every Sunday

6.He invited us to sit down and then ….…made……some tea. 7. She …....did...... my bed this morning.

8.If you………make…........... something wrong, will you feel sorry for it ?

9.You should ………........…… decision (quyết định) as soon as possible. make

10.They ………........ too many errors (lỗi) in the dictation (chính tả) last week. made

11.I hate ……………. the cooking.making 12. My sister has just …………….. a cake. made

13.Tom didn’t ………... his homework. do14. We always …….....… our best do

15. Every student must …….....… his duty.(bổn phận / nhiệm vụ) do

16.Did he ……….........…. many mistakes ?made 17.I want to …………. a course in English. make

18. Have you …….........….arrangements to sell your house ? .mADE

19. We have to ……....... military service in my country.(nghĩa vụ quân sự) do

20.She always ………… fun of me.makes 21.Let’s …….....…… a plan.make

22.There’s nothing ……...........….. there.to do Let’s ………. our way out.made

23.I’m going to ……….... some reading.do 24 I ..…............. the washing up last night.did

25. She wants to……..…… a lot of money make26.I don’t want to …....…….a mess of the job.make

27. I couldn’t come because I was busy .. …to make…....…. my new dress.

28.He ......made........ me read carefully before answering 29.He is .....doing..... research in chemistry now.

30.I ......make..........a promise never to see him again. 31.I like the way you’ve ......made........your hair.

A=(x-2)² + \(\sqrt{ }\)_3 .Ta có:(x-2)^2 \(\ge\) 0 suy ra (x+2)²+ căn 3\(\ge\)căn 3 .Dấu = xảy ra \(\Leftrightarrow\)x=-2.Vạy A_min=căn 3\(\Leftrightarrow\)x=-2

B mik nghĩ là sai đề

C làm tương tự câu a