Tom, clean up the broken glass _________ someone walks on it.
—You seem to have had that car for years. ---Yes, I should sell it ____ it still runs.
. Do you know the girl _____ just now?
Now, children, it’s time you _______.
In order to prevent the fire spreading, some of the houses nearby _____before the firemen arrived.
. He shut the window with such force ________ the glass broke.