Exercise 9: Complete each gap with the correct form of the word in brackets.

1. The ___ Digestive _____ (1. DIGEST) system breaks down food into simple substances for the body cells to use. These substances are _absorbed_______ (2. ABSORB) into the bloodstream and waste matter is passed out of the body as urine or faeces. Cells need oxygen to break down and release __energy______ (3. ENERGETIC) in food. The oxygen is taken into the body through the __respiratory______ (4. RESPIRATION) system-the nose, windpipe, or trachea, and two lungs. You take in oxygen from the air when you breathe in and release waste carbon dioxide when you breathe out.

31. festival

31. There are a lot of activities in the fesstival.

32. Mrs Hanh has a daughter and a son

33. for

34. before

35. A

36. You can play some games when you have free time

37. Would you like me to bring you a cup of tea?

38. an

39. B

40.D

41. John can't go out with us this evening

42. Does your uncle plant many flowers in the garden?

43. What

44. Kitchen

45. A

46. B

47. The children look very excited while playing games during  break time

It is important to eat nutritious food.

D

Ủa tr trong đầu mình nghĩ là busy mà gõ B đó tr ơi, dấu hiệu tuổi già :)
 

1.Thời gian hòn đá chạm đất là:

\(t=\sqrt{\dfrac{2h}{g}}=\sqrt{\dfrac{2\cdot500}{9.8}}=10.1\left(s\right)\)

2. Quảng đường vật đi được trong 5s

\(s=\dfrac{1}{2}gt^2=\dfrac{1}{2}\cdot9,8\cdot5^2=122,5\left(m\right)\)

III

1.B

2. A

3. A

IV.

4. D

5. C

6.B