问题
选择题
— Did Tom go back late last night?
— No. It was just nine o'clock ____ he arrived home. [ ]
A. after
B. when
C. before
D. that
答案
答案：B
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— Did Tom go back late last night?
— No. It was just nine o'clock ____ he arrived home. [ ]
A. after
B. when
C. before
D. that
答案：B