loadingD. She had to be away from school to attend to her husband. 正确答案：D
18. 第三次作业问题19
A. By raising cattle.
B. By working on farms.
C. By working in factories.
D. By raising sheep. 正确答案：C
19. 第三次作业问题17
A. It is completely flat.
B. It has few rivers.
C. It has many large lakes.
D. It is hilly. 正确答案：D
20. 第三次作业问题4
A. Young people are too quick in making decisions.
B. Young people seldom stay long on the same job.
C. Young people lose their jobs easily.
D. Young people are too eager to succeed. 正确答案：B