The students in China often get to school _____ bike, but the students in Japan usually _____ the train to school.

Why not take this sweater, Li Hua?—I have only 20 yuan. I can’t _____ it.

Some organizations have been__________ to help the poor students in the western areas of China.

There ______ a large number of students in our school. The number of the students_______ over three thousand.

You must keep the door _______ when you leave your room. — But I want to get the fresh air. I think I can keep the window ________ instead.