_______ how to do the homework, I went to ask my teacher for help.  

Deeply _______, I thanked her again and again.　

With winter _______ on, it's time to buy warm clothes.

. _______ the office, the foreign visitors were shown round the teaching building.

He went from door to door, _______ waste papers and magazines.

The student corrected his paper carefully, _______ the professor's suggestions.   

The _______ price will save you one dollar for each dozen.　

People _______ in the city do not know the pleasure of country life.

The library's study room is full of students _______ for the exam.

The ground is _______ with _______ leaves.