---I have been to Hangzhou once(需解释) ---when____you_____there?A.did go B.have gone C.have been
问题描述:
---I have been to Hangzhou once(需解释) ---when____you_____there?A.did go B.have gone C.have been
----I have been to Hangzhou once(需解释) ----when____you_____there?A.did,go B.have,gone C.have,been
答
A
WHEN 不能与现在完成时连用.