Whatever the cause of the heat may be, we do know that the earth gets hotter down we dig.
| A．further | B．the farther | C．the farthest | D．the furthest |
He ________up early and cook breakfast for himself when he lived alone ,
| A．was used to get | B．used to get | C．is used to get | D．has been getting |
After the introduction of the modern equipment, the factory produced _______ cars as the year before.
| A．twice more | B．as twice as many | C．twice as many | D．twice the amount of |
I was crazy because it _____me two hours to get_____ in the restaurant the other day.
| A．took, served | B．cost, serving | C．took , serving | D．spent, served |
Sam _____ some knowledge of the computer just by watching others working on it.
| A．brought up | B．looked up | C．picked up | D．set up |
I was putting on my shirt ______ my telephone rang.
| A．while | B．when | C． as | D．before |