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 |
___ information___ stored in this computer．
| A．Large quantities of, have been | B．A great many, has been |
| C．A large quantity of, were | D．Quite a lot, is |
Please don’t bother me again. I’ll inform you of the details at a/antime if you must know.
| A．appropriate | B．convenient | C．acceptable | D．accessible |
I just don’t understand
that leads to so many teenagers addicted to playing computer games.
| A．why it is | B．what it is | C．what it does | D．why it does |
These problems may lead to more serious ones, ifunsolved.
| A．remained | B．keeping | C．left | D．making |
His efforts to raise money for his program were ____ because no one showed any intention to take a cent out of their pockets.
| A．in place | B．in sight | C．in effect | D．in vain. |