问题
选择题
An idea often occurs to me __________ I am in trouble, I can turn to the immigration office. [ ]
A. if
B. that
C. which
D. that when
答案
答案：D
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An idea often occurs to me __________ I am in trouble, I can turn to the immigration office. [ ]
A. if
B. that
C. which
D. that when
答案：D