单项选择题
A. To other European countries. B. To the remote areas and suburbs. C. To the natural parks for birds. D. Back to their nests.
A. Professor Smith will help Mary to take the course simultaneously. B. Mary will probably postpone taking the course of statistics. C. Mary will require taking the accounting course first. D. Mary will take the course of Professor Smith.
A. Small companies. B. Industrialists. C. Trade unions. D. The younger generation.