问题
选择题
— How long have you been here？
— ______ the end of last month，
A．In
B．By
C．At
D．Since
答案
答案：D
since引导的介词短语和现在完成时连用
搜题请搜索小程序“爱下问搜题”
— How long have you been here？
— ______ the end of last month，
A．In
B．By
C．At
D．Since
答案：D
since引导的介词短语和现在完成时连用