Where ____ Wang Jun and Mr. Li from —They are from Shanghai.

When you are in the lab, you should ___ teacher’s instructions.

The students were____ over the____ problem,listening to the teacher with a ____ expression on theirfaces.[ ]

he will return to his native land.

ys more and more people regard traveling as partof their life, and Chinese transport has been strengthened for the holidaytravel ____.