答案是E,我选的B,B哪里错了呢? 是require sb that错吗?难道这里不可以用虚拟语态嘛?还是说那个it多余了?还是其他原因?
6-24:
A March 2000 Census Bureau survey showed that Mexicoaccounted for more than a quarter of all foreign-born residents of the UnitedStates, the largest share for any country to contribute since 1890, whenabout 30 percent of the country’s foreign-born population was from Germany.
A. the largest share for any country to contribute
B. the largest share that any country has contributed
C. which makes it the largest share for any country to contribute
D. having the largest share to be contributed by any country
E. having the largest share to have been contributed by any country
答案是B, A哪里不对呢?
呜呜,语法还是好弱啊,麻烦哪位好心人给解释一下吧。感激不尽!