Some Q/A

Hi, can anyone check my answers for the test-prep? 

26. Choose the option that best corrects the comparison error in the underlined part of the following sentence.

With so many young adults entering the workforce, few people are surprised that there are larger numbers of unemployed college graduates than twenty years ago.
Answers:
• A - then there were twenty years ago
• B - there was twenty years ago
•C -  than there were twenty years ago
• D - than did occur twenty years ago

27. Identify the sentence that illustrates correct verb tense usage.
Answers:
• A - Being an accomplished skier herself, Magda understood that Grandma's old trophies captured the moments in which Grandma excelled. 
• B - Sergio told me that he just discovered a secret door under his porch, but I think he knows about it since he moved into the house.
•C -  Because Alma did a great deal of volunteer work for the new library before it opened, she was honoured at a special dinner.
• D - Never having read The Adventures of Huckleberry Finn, I found myself in a fix when asked to explain why Huck decides to light out for the territory at the end of the book.
• c and d

28. Choose the series of verbs that best completes the following sentence.

_________ a picky eater my whole life, I _______ I wouldn't like those fried fish lips.
Answers:
• A - To be, had to know
• B - Having been, knew
• C - Having been, had known
• D - Being, knew

29. Choose the series of verbs that best completes the following passage.

Garrett __________ ostracized by the other penguins for so long that he no longer noticed the way they _________ him. For their part, the others _________ Garrett ________ a rogue.
Answers:
• A - has been, shun, believe, to be
• B - had been, shunned, believed, to be  
• C - was, shunned, believed, was
• D - had been, shun, believe, is

30. Choose the option that best corrects the pronoun reference error in the following sentence.

There is advice about marketing, which is invaluable, in Kerstall's new book.
Answers:
• A - Kerstall offers invaluable advice about marketing in her new book.
• B - With advice about marketing, the help offered in Kerstall's new book is invaluable.
• C - In Kerstall's new book she offers invaluable advice about marketing.
• D - In her new book, Kerstall offers invaluable advice about marketing.

THANKS