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---Whereyou(be)?---I(be)tothelibrary.---Whenyou(come)back?-----Whereyou(be)?---I(be)tothelibrary.---Whenyou(come)back?---I(come)backhalfanhourago.

题目详情
---Where _____ you _____(be)?---I _____(be) to the library.---When _____you _____(come) back?--
---Where _____ you _____(be)?
---I _____(be) to the library.
---When _____you _____(come) back?
---I ____(come) back half an hour ago.
▼优质解答
答案和解析
Where have you been?
I went to the library.
When did you come back?
I came back half an hour ago.