請幫忙解答~~~~急

GiGi

1. A 1972 agreement between Canada and the United States reduced the amount of phosphates that municipalities had been allowed to dump into the 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
請問(A)(D)如何做選擇?
2.A controversial figure throughout most of his public life, the Black leader Marcus Garvey advocated that some Blacks return to Africa, the land that, to him, symbolized the possibility of freedom.
(A) that some Blacks return to Africa, the land that, to him, symbolized the possibility of freedom
(B) that some Blacks return to the African land symbolizing the possibility of freedom to him
(C) that some Blacks return to Africa which was the land which symbolized the possibility of freedom to him
(D) some Black’s returning to Africa which was the land that to him symbolized the possibility of freedom
(E) some Black’s return to the land symbolizing the possibility of freedom to him, Africa
我選(C)但答案是(A).我不懂為何(A)正確?(C)錯在哪?
10.    A large rise in the number of housing starts in the coming year should boost new construction dollars by several billion dollars, making the construction industry’s economic health much more robust than five years ago.
(A) making the construction industry’s economic health much more robust than five years ago
(B) and make the construction industry’s economic health much more robust than five years ago
(C) making the construction industry’s economic health much more robust than it was five years ago
(D) to make the construction industry’s economic health much more robust than five years ago
(E) in making the construction industry’s economic health much more robust than it as five years ago
正確答案是(C)但我覺得(B)也對.特別是(C)中it was ......其中這was代替哪個動作呢?

Snazzy

1, i like choice A because it has righ tense, past perfect.  when the agreement took into effect, it's not allowed to dump that much amount of phosphorates. but it had been allowed before 1972
2, i don't like C as it has too many modifiers, 2 'which'es. A is good, clear with 同位语和查入狱。。
10， B is wrong.
a, according to parallelism, if there were a 'and' before 'make', it should be parallel to 'boost', the meaning is changed.
b, 'it was' refers to '... health was', it reads perfect with 'it was', i don't know why though. 请大虾只点

bigcamel

1 d的事态显然有问题
2 c是一个让人觉得很痛苦的句子：罗嗦，且不该用which
3 it was指economic health was

AMBER513

看一下！