2.3. Is this factory __________ some foreign friends visited
2.3. Is this factory __________ some foreign friends visited last Friday 3. Is this factory __________ some foreign friends visited last Friday 这里的 last Friday做啥成分啊
空里填 the one你把这个句子还原成肯定句,This factory is the one some freign friends visited last Friday. 如果用that 或者which,前面就没有先行词了,显然不对。另外factory前面如果有定冠词the,就应该用that或which了。