Across all media，people are debating about________we need to keep track of every school bus on China’s road.

Inside are over 500 paintings, prints, watercolors, and a _______ of other art objects.

We have to _____ the wheat as soon as possible because a storm is on the way.

______ we clean the classroom at once–No, you _____. You____ clean it afterschool.

Getting to the cinema, quite out of breath, we found the filmfor ten minutes