Tom, clean up the broken glass _________ someone walks on it.
It was really moving that the young man, having little money himself, ______ buy those poor children school things each term.
Beauty is in the eye of the beholder. That is to say, individual opinions vary about _______ accounts for beauty.
Two weeks after I posted it, the parcel came back to me again, with a note _______, “No person of that name at this address!”
She is always very attentive in class. You may find that almost every word her teacher says _______ in her notebook.
Mr. Wang, a famous lawyer, was on a business trip yesterday, or he _______ me a helping hand with my case.