—Would you mind giving your advice on how to improve our business management?—If you make ______ most of the equipment, there will be ______ rise in production.
We offered him our congratulations ___ his passing the college entrance exams.
In the dark street, there wasn’t a single person ___ she could turn for help.
___ this book and tell me what you think of it.
He decided to visit the family ___ Friday night.
Are you paying now, or shall I ______ to you?