Tom, clean up the broken glass _________ someone walks on it.
The young lady wanted to ______ she was warned not to do so .
He has done so many bad deeds that we should never let him ___it .
.The old house ____ the old man of his happy childhood .
During the the Qingming Festival many Chinese will go to clean the tombs and light incense _____ their ancestors .
The letter he had been looking forward to ____ at last .