The trouble with such resources as coal, oil and gas ______ that they are not renewable.
| A．was | B．are | C．have been | D．is |
74. All the nations should put _____ the misunderstanding between each other. If each nation does so, this world will become a peaceful and lovely garden.
| A．away | B．on | C．off | D．Up |
73. The general asked his men to push _____ so they might overtake the retreating(败退的) enemy troop.
| A．out | B．over | C．on | D．Off |
72. At the beginning, I had some difficulty with my English, and my teacher pulled me ______.
| A．down | B．over | C．up | D．Through |
71. Such a small man can’t _____ reach the balloon one metre higher than he.
| A．possibly | B．impossible | C．possible | D．Impossibly |
70. These books are _____ written for those who learn how to use computer. It’s an ABC of computer learning.
| A．particularly | B．specially | C．especially | D．Peculiarly |