题目内容
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 |
B
解析
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题目内容
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 |
B
解析