Neither of them knew what __________ was doing.

This poem can remind of the good old days___ studied in this beautiful school.

They have been working on the bridge for a week. It seems they need ________ two weeks to finish it.

—What do you think of the performance today?—Great!       but a musical genius could perform so successfully.

Confucius Constitute is a worldwide non-profit （非营利的）organization, _____ the Chinese government set up to popularize（推广）the teaching of Chinese and spread the Chinese culture.