问题
选择题
Last term our maths teacher set so difficult an examination problem _____ none of us worked it out.
A．that
B．as
C．so that
D．which
答案
答案：A
so. . . that. . . 状语从句.
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Last term our maths teacher set so difficult an examination problem _____ none of us worked it out.
A．that
B．as
C．so that
D．which
答案：A
so. . . that. . . 状语从句.