“Hello! I ____________ you ____________ in London. How long have you been here?”
A.don’t know; were B.hadn’t known; are C.haven’t known; are D.didn’t know; were正确答案D
“Hello! I ____________ you ____________ in London. How long have you been here?”
A.don’t know; were B.hadn’t known; are C.haven’t known; are D.didn’t know; were正确答案D
