10.
(1) China is a great nation, (1) up of 56 peoples.
(2)Mr. Oliver (2) an important position in the Ministry of Foreign Affairs, who is (3) in meeting important figures nearly everyday.
(3)H2O (4) for water, which (5) of hydrogen and oxygen.
(4)Another big (6) between American and British English is spelling.
(5) (7) from being fun and good exercise, swimming is a very useful skill.
(6)Her work has (8) to our understanding of what effect cigarette smoking has on us, which most people believe is a major factor (9) to cancer.
(7)Our basketball team suffered another (10) , (11) by our opponent by 10 points.
(8)His careless driving nearly (12) to there being a severe traffic accident.
(9)The salesgirl said she would (13) the TV set with a new one if we were not satisfied.
(10)All of the flowers now (14) here have developed from those they once grew in the forest.