24. He is the president ....of............. our club.

25. She spents most .......of........... the time .......on.......... the couch .......in........... front ........of...... the TV.

26. What do you usually do ....at............ school?

27. Why don't you come .......in..............?

28. They swap cards ....to.................. their friends.

29. Will you play a game .....with......... catch?

30. What do you do .........at........ recess?

31. They usually have portable Cd player ......with.............. small earphones.

32. I'll take part ....in............. your club.

33. They read or study ..at........ the same time.

34. We enjoy all ......of.......... our classes.

35. .......At.............. school we study many things.

36. ......In............... history, we study past and present events .....in........ Vietnam and ...around........... the world.

37. ........In............ physics, we learn ....about............ how things work.

38. She learns how to use a computer .......in............. her Computer Science class.

39. Newspapers are ....on............... the racks .........in.......... the middle.

40. Math books are ..on............ the shelves ............on... the left.

41. The largest library is ....in.............. Washington D.C, the capital ......of............the USA.

42. Those books ....at........... the back ..of.............. the libraries are ..........in.......... English.

43. Now, come and look ......at......... the kitchen.

44. My uncle is ........at.............. work now.

45. Can I see the rest ..of........... the house?

46. She'll have a party .........on....... her birthday.

"Do you like sports?" You can hear this .question.......... very often. Many people answer "yes, i do", and ..others........ think about watching a game of football at a stadium, or ...on.......... TV while sitting in a comfortable armchair. But watching sports events and going in for sports..are.......... two diferent things. Let's hope that you prefer the second.

Sports hold ....an........ important place in our life. when you listen to the radio early in the moring, you can always ..hear....... sports news. When you open a newpaper, you will always find .information..... about some game or other or an article about your favourite kind of sports. Especially interesting are stories ..about........ famous men or women in the world of sport, how they became chakpions and about .their..... plans for the future.

Television programmes about ...sports............. are also very popular, and you can watch something interesing practically every day.

a, đạo đức

Bn tự vẽ hình nhé:

a, xét tam giác ABH và tam giác CBA có: Góc ABC chung

Góc AHB= góc BAC(=90 độ)

=> tam giác ABH~tam giác CBA(g.g) (1)

Xét tam giác CAH và tam giác CBA có: góc BCA chung

góc AHC=góc BAC(=90 độ)

=> tam giác CAH ~tam giác CBA(g.g) (2)

Từ (1) và (2) => tam giác ABH~ tam giác CAH

b, Có tam giác ABH~ tam giác CAH(cmt)

=> \(\dfrac{AH}{BH}=\dfrac{CH}{AH}\)

=> \(AH^2=BH.CH\left(đpcm\right)\)

bài này có liên quan gì đến P, Q đâu

Tổng 2 số là 18 x 2 = 36

Số lớn là (36 + 8) : 2 = 22

Số bé là 36 - 22 = 14

hiến pháp năm 1992 là hiến pháp của thời kì đổi mới

A new bridge is going to be build next year

=>They are going to build a new bridge next year.

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