•A recently published report indicates that the salaries of teachers continue to lag far behind other college-educated professionals, because they make an average of nearly $8,000 a year less at the start of their careers and almost $24,000 less a year by the time they reach the age of 50. A.other college-educated professionals, because they make an average of nearly $8,000 a year less at the start of their careers and almost $24,000 less B.other college-educated professionals, by an average of nearly $8,000 a year at the start of their careers, to almost $24,000 C.what other college-educated professionals are paid—making an average of nearly $8,000 a year less at the start of their careers and almost $24,000 less D.those of other college-educated professionals—by an average of nearly $8,000 a year at the start of their careers to almost $24,000 less E.those of other college-educated professionals—by an average of nearly $8,000 a year at the start of their careers, and by almost $24,000
lag behind by...应该是固定搭配没有错,想知道C中的what从句是否有错 |