请教大全中的问题

1.       According to some analysts, whatever its merits, the proposal to tax away all capital gains on short-term investments would, if enacted, have a disastrous effect on Wall Street trading and employment.

(A) its merits, the proposal to tax

(B) its merits may be, the proposal of taxing

(C) its merits as a proposal, taxing

(D) the proposal’s merits, to tax（A）

(E) the proposal’s merits are, taxing

2. chance 的用法应该是 a chance  of doing, 还是a chance to do?

3.   Although fruit can no longer grow once it is picked, it continues for some time to respire, taking in oxygen and giving off carbon dioxide, similar to the way human beings breathe.

(C) just like the breathing of human beings

(E)
                                just as human beings do when they breathe

(C) just like the breathing of human beings

(E)
                        just as human beings do when they breathe