12. Look how well he ________________ (play) today. I ________________ (never, see) him move so fasst.

13. This season he ________________ (play) for Liverpool. Who ________________ (know) whether he will stay or not?

14. What ________________ (you, do)? Why ________________ (you, lie) in the bed. ________________ (I, not , tell) you to tidy up your room?

15. Tom ________________(sell) his car. ________________ you (know) how much he ________________(want) for it?

16. Listen ! Somebody ________________ (play) my favourite song. I ________________ (not, hear) it for such a long time.

Cho tam giác ABC nhọn (AB <AC) có hai đường cao BE, CF cắt nhau tại H.

a) Chứng minh: $\Delta FHB\backsim \Delta EHC$ .

b) Chứng minh: $\Delta \mathrm{AEB}\backsim \Delta \mathrm{AFC\; và\; góc\; AFE=góc\; ACB}$ 

1.”I’ll see you tomorrow, John”

=>Peter told John____________

2.”Your letter arrived yesterday”

=>David told me_______________

3.” I like this hotel very much”

=> He said______________________

1.”Tuan is playing badminton with his friend now”.

=> He told me____________________

2.”We haven’t been to the art gallery for ages”

=> They said_________________

3.”I always eats lots of fresh fruit and salad”

=> She said__________________________

1.“In 20 year’s time we will travel on flying trains”, Olive said

=> Olive said_____________________________

2.“I won’t have enough money to finish this job”

=> He said________________________________

3.“The weather may get much worse tomorrow”

=> He told us__________________________________

Complete each sentence with the correct word from the box.

1.The local residents lost all of their______ due to the earthquake last month

2.The children are taught to avoid_______ places such as windows or bookshelves during an earthquake.

3. Rescue workers are looking for the missing people while volunteers are giving food and drinks to the _______

4.Before any natural disaster, you should follow the ______ kit in your house.

5. The local residents should follow the______ about emergency information given by authorities.

6. Do humans produce less_____ today than in the past?

7. The exhaust fumes from______ are the main cause of air pollution in big cities.

8. Exthquake is one of the natural______ that we often face in our neighborhood.

9. The boy is talking about the_____ that floods cause to hic city.

Cho hcn ABCD có AB=12cm; BC=5cm. Gọi H là hình chiếu của A trên BD, tia AH cắt CD tại K

a) Cm tam giác ABD đồng dạng với tam giác DAK

b) Tính độ dài DK

Cho tam giác ABC có các đường cao AD,BE,CF cắt nhau ở H.CMR :