Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions.
Question 29: Many students at the institution worshipped her father because he was a distinguishable professor and achieved many prestigious awards.
A. prestigious B. achieved C. distinguishable D. worshipped
Question 30: My close friends spend most of their free time helping the homeless people in the community last year.
A. spend B. of C. close D. helping
Question 31: Bottlenose dolphins are usually slow swimmers, but it can reach speeds of over 30 mph for
short periods .
A. usually B. of C. it D. periods