*Giải thích tại sao?
III.Choose the best answer A, B, C or D to complete the sentences.
11. We came to the remote village and meals for homeless children .
A. cook B. offered C. do D. made
12. You should think of the volunteer activities in your community.
A. taking in B. taking part in C. participating D. making
13. Traditional volunteer activities include money for people in need, cooking and giving food.
A. rising B. raising C. getting D. taking
14. You can help young children by them to do homework before or after school.
A. doing B. offering C. teaching D. helping
15. Let’s collect and warm clothes to homeless children in our city.
A. give away B. give back C. take off D. put on
16. To help people in remote areas, we can transportation, such as giving rides to the elderly.
A. give B. bring C. provide D. donate
17. Let’s help the sweet children because they have bad .
A. live B. living conditions C. ways of life D. earnings
18. They have decided to ride to work it is good for their health and the environment.
A. so B. but C. although D. because
19. Our school has a programme to children from poor families in Ho Chi Minh City.
A. ask B. offer C. tutor D. volunteer
20. Americans the tradition of volunteering and helping one another since the early days of the country.
A. have had B. has had C. had D. to have
21. Volunteers can do general such as clean-up projects or home repair.
A. activities B. things C. labour D. jobs
22. My brother and I a white tiger already.
A. have seen B. has seen C. see D. are seeing

cho hình vẽ , biết 

a,Vì sao AD//BC

b,tính số đo góc C