The cancer risks _______ with smoking have been well proved.
All reference books ________, he didn't find the key to the question.
—Can you come up with another good idea? —This is the best approach I can imagine ________ the work ahead of schedule.
Many of the onefamily children are so accustomed to ________ that they react violently when they hear something different.
If you think that treating a woman well means always ________ her permission for things, think again.
The monument was built in honor of the explorer who was believed ________ the big river.