36 . B.There are many English speaking countries in the world.

37 . D. A lot of people enjoy seeing ‘Titanic’ despite its sad ending.

38 . B. If people breathed contaminated air, they would have breathing problems.

39 . A. If there were more trees in the area, the air would be fresher.

40 . A. A lot of people were injured in the earthquake.

36. There/ many/ English/ speaking countries/ the world
A. There are many English speaking countries on the world.
B. There are many English speaking countries in the world.
C. There are many English speaking countries at the world.
D. There are many English speaking countries of the world.
37. A lot of/ people/ enjoy/ see/ ‘Titanic’/ despite/ sad ending.
A. A lot of people enjoy to see ‘Titanic’ despite its sad ending.
B. A lot of people enjoy to see ‘Titanic’ despite it has sad ending.
C. A lot of people enjoy seeing ‘Titanic’ despite it has sad ending.
D. A lot of people enjoy seeing ‘Titanic’ despite its sad ending.
38. If/ people/ breath/ contaminate/ air, they/ have/ breathing problems
A. If people breathed contaminated air, they had breathing problems.
B. If people breathed contaminated air, they would have breathing problems.
C. If people breath contaminated air, they have breathing problems.
D. If people breath contaminated air, they will have breathing problems.
39. If there were more trees in the area, the air would be fresher. (Là đáp án sẵn rồi mà) 
A. If there were more trees in the area, the air would be fresher.
B. If were there more trees in the area, the air would be fresher.
C. If there would be more trees in the area, the air were fresher.
D. If the air were more trees in the area, there would be fresher.
40. A lot of/ people/ be/ injured/ the/ earthquake.
A. A lot of people were injured in the earthquake.
B. A lot of people were injured on the earthquake.
C. A lot of people were injured at the earthquake.
D. A lot of people were injured for the earthquake.