He was so deep in thought,thinking of the problem ________ he knocked into the tree without noticing it.
Traditionally, college students hold a graduation ceremony to encourage themselves before they _____ on their life journey.
_______ one of you breaks the windows will have to pay for it.
The traveler _____ his coat on a stone and _____ down to have a rest for a while.
—Ann looks hot and dry. —So _______ you if you had a high fever.
After that, he knew he could ________ any emergency by doing what he could to the best of his ability.