A. will have risen B. has risen C. will be rising D. has been rising
单项选择题（33）（）
A. strolling B. sauntering C. wandering D. patrolling
单项选择题The Social Security Retirement Program is made up of two trust funds,（）could go penniless by next year.
A. the larger one B. the larger of which C. the largest one D. the largest of which
