The carbon content of steel largely determines its usefulness for _______ applications.
| A．typical | B．tough | C．fantastic | D．specific |
—Jessica is very bright and studies very hard _____.
—No wonder she always gets the first place in the examination.
| A．as well | B．as well as | C．either | D．also |
The two top students in Mr. Green’s class competed _____ each other for the highest marks.
| A．to | B．for | C．in | D．against |
It is no use ____ with that mean storekeeper, for he won’t cut down the price.
| A．debating | B．talking | C．discussing | D．bargaining |
There is no doubt ____ John will come by bus.
| A．if | B．why | C．that | D．how |
The reason ____he was late was ____he had taken a wrong bus.
| A．why; because | B．for; because of | C．why; that | D．for; that |