Give the correct form of the words

1. Tom only collects stamps from (discard) envelopes

2. He is very good at (accompany) people singing with his guitar

3. (athletic) from several countries competed in many Asian Game

4. The Asian Game are held for the purpose of developing intercultural (know)

5. I am not an avid stamp (collect)

6. The number of (participate) taking part in the event is increasing

7. It is an occasion that (strong) and sports skills are tested

8. Many people like football because it is a very (compete) sport

9. She is the youngest (competition) to take part in this talent contest

10. We took part in the game with great (enthusiasm)

Give the correct tense of the verbs

1. Jane (not be) at home yesterday evening

2. George (not, complete) the assignment yet

3. How long ago (he start) to learn French ?

4. My father usually (drink) beer after meals but now he (drink) tea

5. After he (be) ill for a long time, he (die) last year

6. My children (watch) TV when I (come) back from work

7. I (see) a bad accident while I (wait) for you on this corner

8. As soon as he (get) a certificate in English, he will apply for a job

9. When I looked round the door, the baby (sleep) quietly

10. She is very absent-minded: she (lose) her cell phone three times

11. I was sure that I (meet) him before

12. Nothing (change) in this town since I first visited it

13. While they (dance) in the hall, the light (go) out

14. This is the first time I (be) to this country

15. Today is Thursday and she (be) late twice this week. She (be) late yesterday and on Monday

16. Last month my brother (send) me his photos. He (send) me his photos every year

17. What (you, do) since you left school ?

18. Sometimes I get up before the sun (rise)

19. After Jessica (finish) her degree, she intends to work in her father's company

20. By the time the police arrived, the house (be) burned down

21. I won't leave until she (come) back

22. They (begin) to study at this school 7 years ago

23. Listen ! Someone (knock) the door

24. He often (listen) to classical music whenever he (have) free time

25. They (not go) to the library last Sunday

26. Tom (not, speak) to me since he (arrive)

27. So far this week there (be) three burglaries in our street

28. Susan (send) a letter to her university last month after she (receive) her scholarship check

29. Be quiet ! My parent (work) in the room

30. My mother (be) in hospital for a long time and she cannot go home yet

31. Tim (play) chess when I (come) to visit him yesterday

32. You (see) Robert lately ?

33. When I was a child, I (play) the violin

34. John will buy that book as soon as he (receive) his money next week

35. Linh's brother (lose) his job last month and since then he (be) out of work

36. As soon as she (save) one hundred million dongs, she will retire from work

37. When she was a little girl, every weekend (seem) ideal

38. How many times you (be) to Ho Chi Minh City ?

Cho hình chóp tứ giác đều S.ABCD có cạnh đáy bằng a, cạnh bên bằng \(\sqrt{2}a\) . Gọi O là tâm của đáy và M, N lần lượt là trung điểm của các cạnh AB, BC.

a) Chứng minh : (SBD) \(\perp\) (SAC)

b) Tính tan của góc giữa hai mặt phẳng (SMN) và (ABCD)

Mọi người ơi giúp mình với, mình cảm ơn nhiều nhiều ạ

Tìm giá trị lớn nhất và giá trị nhỏ nhất trong hàm số sau :

Xác định hàm số bậc hai biết đồ thị hàm số (P) cắt trục tung tại điểm có tung độ bằng 1 và nhận điểm I(\(\dfrac{1}{4}\); \(\dfrac{9}{8}\)) làm đỉnh.

Mọi người ơi giúp mình làm bài này nhaa. Cảm ơn trước ạ

Câu 1 : Cho tam giác ABC : a=8, b=10, cosC = \(\dfrac{-1}{32}\). Tính c, cosA, cosB, diện tích, bán kính đường tròn ngoại tiếp, nội tiếp tam giác.

Câu 2 : Cho tứ giác ABCD có I, J là trung điểm AC, BD.

a) Chứng minh rằng : vecto AB + vecto CD = 2 vecto IJ

b) Gọi M là trung điểm BC, sao cho vecto AB = vecto a và vecto CA = vecto b. Tính vecto AM theo hai vecto a và vecto b

1. A: It's quiet here today, isn't it ?
B: Yes, the neighbors ___________ out on a Sunday. (usually/ are)

2. A: Have you been to this place before ?

B: Yes, I __________ as a child. (it/ occasionally/ visited)

3. A: Did the computers crash this morning ?

B: Yes, but they ___________ again. (soon/ were/ working)

4. A: Your friend's late, Vicky.

B: Rachel ____________ that we arranged to go out. (forgotten/ has/ obviously)

5. A: Do you know them ?

B: Yes, they live in the same street as me but I ____________ to them. (never/ have/ spoken)

6. A: Have you finished your homework yet ?

B: Yes, I have. But I ______________ homework. (hate/ really)

Mọi người giúp mình giải với ạ. Mình cảm ơn nhiều