Why did Miss Yang look so worried when we saw her—Because she wondered __________.

I lost my MP3 on my way to school thismorning. —____ You must be careful next time.

With four big windows, our classroom looks very _____________.

To our surprise, the man, who was looked down upon by others in the past, is now ________ the whole project.

Students in our school are encouraged to________more activities after class in order to broaden their knowledge.[ ]