问题
选择题
After visiting China, most of the foreign friends said they would never forget the time _____ they had spent
in China.[ ]
A. what
B. that
C. when
D. at which
答案
答案：B
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After visiting China, most of the foreign friends said they would never forget the time _____ they had spent
in China.[ ]
A. what
B. that
C. when
D. at which
答案：B