. To our ______, the result of the experiment is much better than we expected.

The government placed _____ on the numbers of foreign cars that could be imported.

—Li Lin is very bright and studies hard as well.—It’s no ______ he always gets the first place in any examination.

While visiting the robot exhibition, the professor kept nodding his head to express his _______ with his students’ work.

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