Pine trees, of which there are almost one hundred _____, are found throughout the North Temperate Zone.

The first performance of the musical play “The Sound of Music” aroused ____in audience.

Your _______ as a student will be excellent if you develop a habit of reflecting on how you learn.

They are said to have developed a new ______ to teaching, which is said to improve classroom teaching greatly. 

24．We have strong __________ for believing that the mine accident in Heilongjiang was due to the poor management.