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作者: momohe 时间: 2011-5-31 20:52
主要考察的应该是Parallelism和Logic Prediction吧
A）until 前面通常会有否定内容，not...until
B)continuing缺乏谓语动词
C)还是until,而且will begin...will continue很wordy
D)前面是the sale说明特指，用begins是一般现在时，表示一个通常的状态，语义不符
E)正确，begin...continue对称，as long as..表示sale will continue的前提，语义符合作者: liuyinghong 时间: 2011-6-3 06:45
