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bon

1.        It is an oversimplified view of cattle raising to say that all one has to do with cattle is leave them alone while they feed themselves, corral them, and to drive them to market when the time is ripe.

(A) all one has to do with cattle is leave them alone while they feed themselves, corral them, and to

(B) all one has to do with cattle is to leave them alone to feed themselves, to corral them, and

(C) all one has to do with cattle is leave them alone while they feed themselves and then corral them and

(D) the only thing that has to be done with cattle is leave them alone while they feed themselves, corral them, and（C）

(E) the only thing that has to be done with cattle is to leave them alone while they feed themselves, to corral them, and

答案有误巴，应该是all one has to do with cattle is to leave them...

bon

可是南瓜JJ,无论如何，都应该是to leave 。。。and to drive 巴

c,d都不是这样的

rt316

all + 巴拉巴拉－后面三个to可以全部省，答案应该是C

bon

有这种省法吗？

斑竹最好给个例子

mianmian

这个这个，说实话，我也是第一次看到有这种省略法。 （孤陋寡闻了）

我爱宝宝

up!我今天看到leave跟在is后面也觉得非常的别扭。

烤G族

all one has to do with cattle is leave这里leave前省略了to, 同理可能还有what从句 is (to) do, 类似例句：
All I can do is watch you leave.