1/ she showed a great..generousity( sự hào phóng).....in healping the disabled people in her (generous)
2/ this car is ....economical( tiết kiệm )..... because it consumes much more gases than that one (economy)
3/ the firm keeps....changing..... the iphone's design to attract more customers.(change)
4/there are many .....celebrations( lễ kỉ niệm) . throughout the years in the world(celebrate)
5/trung's sense of humor .....distinguishes....(v/ phân biệt)..... him from other students (distinct)
6/christmas is the ......biggest.....festival of the year in most of Britain(big)
7/..tidal.......waves ( sóng thần) are one of the great forces of nature.(tide)
8/i'll never forget the ....kindness( sự tốt bụng)..... you have shown me.(kind)
9/taxis are too .cost.. for many people to afford.(cost) 
10/the internet has ... developed in Vietnam
11/every student was very ....excited( phấn khích)..... about the holiday .(excite)
12/our team played ....successfully.. We lost (success)
13/We couldn't  win the prize.We were ..succeed(v/ thành công) ...(success)       

1. generosity

2. uneconomical

3. changing

4. celebrations

5.distinguishes

6.biggest

7.tidal

8.kindness

9.costly

10.surprisingly

11.excited

12.unsuccessfully

13.unsuccessful