请教一道语法题

小新和小白9899 · 发表于 2011-3-14 18:15:21

.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

此道题中until和as long as的用法是什么啊，到底在什么位置是正确的啊请教各位NN

powers · 发表于 2011-3-14 22:16:27

as long as 后面跟条件
until后面跟时间

请教一道语法题

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