Professor Johns, the man whose new drug everyone is talking about, refused the interview.
➜ C. The a the

This factory produced twice as many motorbikes in 2014 as in the year 2012.
➜ B. twice as many

Don't put David in charge of arranging the theater trip; he's too unorganized.
➜ C. unorganized

It was thanks to Fred that I secured a place at Harvard.
➜ C. was

As a rule, you shouldn't argue with your hosts unless they have said something openly offensive.
➜ B. have said