Honesty is a basic element in friendsmaking and that is ________ it requires to keep everlasting friendship.

The husband rushed to the hospital ________ he heard that his wife was injured.(2012·天津六校联考)

When Li Ming hurried home, he found that his mother already to hospital.

I have a lot of books, half of ______ novels.

I failed in the final examination last term and only then_____ the importance of studies.