Tom, clean up the broken glass _________ someone walks on it.
He arrived home after the long journey,________.
—The boys hid themselves in the places ________ they couldn’t be found.—How naughty(淘气的) they are!
Is that the reason ________he explained to all at the meeting for his carelessness in his work? Actually we think he is a man who is hard ________ himself especially in work.
The time that she devotes ________ the comic stories is so much that she can’t spare any time to look after her baby.
_________ money has been spent in building the modern library, where we can read books in our spare time.