问题
选择题
They had an accident on the road and didn't ______ at their hotel until after midnight. [ ]
A. check out
B. check on
C. check in
D. check over
答案
答案：C
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They had an accident on the road and didn't ______ at their hotel until after midnight. [ ]
A. check out
B. check on
C. check in
D. check over
答案：C