When products made in factories _____, they are thrown away as garbage.
| A．come to an end | B．are put to use |
| C．are used up | D．wear out |
. I _____ her not to walk on the thin ice but she would not listen to me.
| A．warned | B．persuaded | C．suggested | D．noticed |
It was clear that the small grocer was _____ people he owed money to.
| A．at the expense of | B．at the risk of |
| C．in the way of | D．at the mercy of |
The party, which had been greatly _____, was spoiled by the rude behavior of an uninvited guest.
| A．looked forward to | B．looked up to |
| C．called forth | D．called for |
Everything he said then was _____ by what happened later.
| A．identified | B．signified | C．noticed | D．verified |