Khoáng sản nào sau đây rất ít ở châu Á?
A. Kim cương. B. Vàng. | C.Đất hiếm. D. Than . |
16. Astronauts_______________in their spaceship, but they frequently work outside now.
A. were used to stay B. used to stay C. use to stay D. used to staying
17. People __________________that the earth is round before.
A. were not used to believe B. used to believing C. use to believe D. did not use to believe
18. Mr Kim________________________a secret police before.
A. use to be thought B. used to be thought C. used to think D. use to think
19. A lot of children_________________from dead in the second war.
A. get used saving B. used to save C. used to be saved D. used to saving
20. These girls are used______________________in the field.
A. to work B. to working C. worked D.working