—Where is our English teacher?—She is in the classroom, _____ the exercises _________ the students have done at home.

They might just have a place ___ on the writing course ---- why don’t you give it a try?

After starting work, Cao spent his evenings _____ in his books and was eventually admitted to a secondary technical school.

On August 12,2009, Typhoon Morakot swept across Taiwan island, _____ a lot of villages _____.

.Jane,_____ at the news of the earthquake, was at a loss for words.