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_Where is Jack _He's away to spend his holiday.He's gone either to Hangzhou or to Wuhan,butI'm not sure___.A where B which C that D therre选哪个,为什么,

题目详情
_Where is Jack _He's away to spend his holiday.He's gone either to Hangzhou or to Wuhan,but
I'm not sure___.
A where B which C that D therre
选哪个,为什么,
▼优质解答
答案和解析
which 因为是两个之中选一个.如果没有后面的句子,直接说Where is Jack _He's away to spend his holiday.I'm not sure where