题目内容：

it for nearly a weekDid you enjoy the days __that_ you spent in Beijing
如果把the days改为 these day,那是不是用when

优质解答

这跟these一点关系都没有,主要是因为后面的spent缺宾语,所以只能用that或which作引导词
要用when的句子可以是...enjoy the days when we worked together