cho đoạn thẳng AB có O là trung điểm. Trên hai nửa mặt phẳng đối nhau bờ AB các tia Ax và By cùng vuông góc với AB. Trên tia Ax lấy điểm C, trên tia By lấy điểm D sao cho AC = BD 

1) C/m: O là trung điểm của CD

2) trên cạnh BC lấy điểm E và trên cạnh AD lấy điểm F sao cho BE = AF. C/m O là trung điểm của EF 

23. I find it (astonished/astonishing) you didn’t like sci-fi movies.

24. We  adore winter _________ the cold.             

A. in spite of B. although C. however

25. She went to bed early_________ she didn’t finish her work.                  

A. despite B. although C. however

26._________ the fact that he is 23 years old, he is so childish.    

A. in spite B. despite C. however

27. _________ we have a slim chance to win, we won’t lose hope.

A. despite B. although C. however

28. _________ of his bad luck, he won the medal.

A. in spite B. despite C. however

29. He is friendly _________ the fact that he’s very famous.

A. despite B. although C. however

30. The athlete completed the race _________ his pain.

A. despite B. although C. nevertheless

31. having a happy ending, the film starts with a terrible accident.

A. Despite B. Although C. However D. Nevertheless

32. Although the acting is wonderful, the ending is very  

A. excited B. bored                            C. interested D. boring

8. When I was young I went to school _________ bus.     (  on /   by /   in   )
9. Sorry, I can’t call you - I’m ________________ a plane!   (  on /   by /   in   )
10. She asked for a ride__________ my motorcycle.     (  on /   by /   in   )
11. I’m on my way, I just got     ________  the taxi.    (  on /   by /   in   )
12. Going_____________foot is good for your health. (  on /   by /   in   )
13. I like reading books when I’m____________ the bus    (  on /   by /   in   )
14. In ancient times, people usually travelled _____ horse.    (  on /   by /   in   )
15. The end of the film was so moved/moving.
16. The boy was so frightened/frightening by the film that he couldn't sleep last night.
17. I am amazed/amazing that he has won two Oscars for Best Actor.
18. We were terrified/terrifying of the ending of that horror film
19. We found the film's plot (gripped/ gripping) _______________________-
20. The film was terribly (disappointed/ disappointing).
21. I never find reading books (bored/ boring).
23. I find it (astonished/astonishing) you didn’t like sci-fi movies.