一道语法题

gaogin

1) In its most recent approach,the comet Crommelin passed the Earth at about the same distance and in about the same position,some 25 degrees above the horizon,(that Halley`s comet will pass) the next time it appears.
A,括号部分
B，as Halley`s comet
C, as will Halley`s comet
D, as Halley`s comet will do
分不清楚B，C，D的区别，请教。

yzlinlin

我当时是根据the next time it appears来判断划线部分应该是将来时，选择D。

这题主要是考same...as 已经助动词是否补出。关于后者，是难点。请搜索一下以前SBBI发的帖子。