I admit that the problem is difficult, I don’t agree that it cannot be solved.
| A．As long as | B．When |
| C．As | D．While |
18. Whenever we hear of a natural disaster, we feel sympathy ______ the people who have been affected.
| A．from | B．by | C．for | D．on |
17. _______ here in time, he came _______ all the way.
| A．Getting; running | B．To be getting; to run | C．To get; running | D．To get; to run |
16. After he left college, he was employed in an international company and _______ there ever since.
| A．worked | B．has worked | C．had worked | D．was working |
15. The factory _______ large numbers of tractors to the peasants.
| A．provides | B．supplies | C．ensures | D．stores |
14. The teacher insisted _______ until we finished the work.
| A．we not rest | B．on our resting | C．we rested | D．we would not rest |