This dictionary is at least three times as thick as        you borrowed from the library.

.She has three brothers.___ is a doctor, ___ are PLA men.

_______ is very important for us students to learn English well.

(2013·高考浙江卷)Half of ________ surveyed in 16 countries say they go first to their closest friend to share their deepest wishes and darkest fears.

—I’d like some more cheese.—Sorry, there’s _____ left.