Choose the letter A, B, C or D to indicate the underlined part that needs correction in each of the following sentences. Ques

Choose the letter A, B, C or D to indicate the underlined part that needs correction in each of the following sentences.
Question 9. If we polluted the air, more people will have breathing problems.
A. polluted B. more C. have D. breathing
Question 10. Ships spill oil in this river, which results of water pollution.
A. spill B. in C. results D. of
Question 11. Have you ever visited Niagara Fall, which is a spectacle waterfall in Canada?
A. visited B. a C. spectacle D. Canada
Choose the letter A, B, C or D to indicate the correct answer to each of the following questions.
Question 12. ________ the factory dumped raw sewage to the river, many aquatic animals and plants died.
A. due to B. since C. because of D. result in
Question 13. Soil pollution ________ the death of useful plants
A. causes B. leads in C. results D. due to
Question 14. If I _______ you, I _________ the English Singing Contest
A. were/would join B. were/will join C. am/will join D. be/would join
Question 15. Legend says that some of the castles ________ by ghosts.
A. is haunted B. have haunted C. were haunting D. are haunted
Question 16. Big Ben is a monument in London which _______ the United Kingdom.
A. symbols B. symbolises C. sybolization D. symbolic
Question 17. By the time the storm _______ the city, all people _________ to safe area.
A. strike-had moved B. had struck-moved
C. struck-had moved D. were striking-moved
Question 18. A muslide ________ a village recently.
A. have buried B. had buried C. buried D. has buried