c.主从举时态关系:主将从将错,主过完从过完错,主现完从现完对,主将从现对,主过从过完对(新东方朱江老师的口诀) 62. 1972 agreement between Canada and the United States reduced the amount of phosphates at municipalities had been allowed to dump into Great Lakes. (A) reduced the amount of phosphates that municipalities had been allowed to dump (B) reduced the phosphate amount that municipalities had been dumping (C) reduces the phosphate amount municipalities have been allowed to dump (D) reduced the amount of phosphates that municipalities are allowed to dump (E) reduces the amount of phosphates allowed for dumping by municipalities 这个不符总结吧 |