1. The sale of government surplus machinery will begin at 9 a.m. and continue until the supply lasts.
(A) will begin at 9 a.m. and continue until the supply lasts
(B) begins at 9 a.m., continuing until the supply lasts
(C) will begin at 9 a.m. and, until the supply lasts, will continue
(D) begins at 9 a.m. and, as long as the supply may last, it continues（E）
(E) will begin at 9 a.m. and continue as long as the supply lasts
请问为什么答案是E不是D?E中时态并不一致，will begin ... and continue as long as ...lasts
先用将来时will begin..., and (will) continue;最后用一般现在时lasts,而D的时态一致，都是一般现在时
感觉D更好一点
楼上的，我想请问一下，我在白永语法上看到：一个复数名词+will do and do是有歧义的，要改成will do to do（这道题主语是单三所以才不歧义），有这样的规则么？
我感觉D的错误比较多：先且不说begins at 9 am（表示每天的状态）与原句中的will begin（表将来的情况）有出入；在后面的主从复合句中it应当优先指代从句的the supply，可是逻辑意思上it是指the sale，错。
另外在原句中是不是有may的意思我们不知道，所以是否加may这个词当慎之又慎。而且as long as可以作“只要，如果”的意思，后面也无需再加may了。
这个规则好象还是第一次听说，可不可以请楼上MM举个例句呢？
楼上的规则好像例外很多，没有谁敢规定主从句时态必须一样的。
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是呀，我说的是尽量保持一致。这里从句用现在时有什么特殊理由吗？
谢谢
1. The sale of government surplus machinery will begin at 9 a.m. and continue until the supply lasts.
(A) will begin at 9 a.m. and continue until the supply lasts
(B) begins at 9 a.m., continuing until the supply lasts
(C) will begin at 9 a.m. and, until the supply lasts, will continue
(D) begins at 9 a.m. and, as long as the supply may last, it continues（E）
(E) will begin at 9 a.m. and continue as long as the supply lasts
请问为什么答案是E不是D?E中时态并不一致，will begin ... and continue as long as ...lasts
先用将来时will begin..., and (will) continue;最后用一般现在时lasts,而D的时态一致，都是一般现在时
感觉D更好一点
D 去掉插入语就是：
The sale of government surplus machinery begins at 9 a.m. and it continues.
在此处的代词使用不够简洁。
E十分并列，而且表达清楚简练。
做对了，但是还有疑问，顶
1. The sale of government surplus machinery will begin at 9 a.m. and continue until the supply lasts.
(A) will begin at 9 a.m. and continue until the supply lasts
(B) begins at 9 a.m., continuing until the supply lasts
(C) will begin at 9 a.m. and, until the supply lasts, will continue
(D) begins at 9 a.m. and, as long as the supply may last, it continues（E）
(E) will begin at 9 a.m. and continue as long as the supply lasts
请问为什么答案是E不是D?E中时态并不一致，will begin ... and continue as long as ...lasts
先用将来时will begin..., and (will) continue;最后用一般现在时lasts,而D的时态一致，都是一般现在时
感觉D更好一点
and 后面是不是可以认为省略的will ? 请讨论！！
1.
The sale of government surplus machinery will begin at 9 a.m. and continue until the supply lasts.
(A) will begin at 9 a.m. and continue until the supply lasts
A选项不是很完美吗？
大全给的解释是until应该加一点时间，但是有例句：
You cannot leave until your work is finished.
We can't start the job until we have the approval from the authority concerned.
NN来解释下啊！！
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