when did you come here ()the end of last month How long have you been here?”How long have you been here?” “_______ the end of last month.”when did you come here ()the end of last month ,i thinkWhen shall we finish the project?--- _______ the end of this month,I thinka.sinceb.byc.at这如何区别哪
问题描述：
when did you come here ()the end of last month How long have you been here?”
How long have you been here?” “_______ the end of last month.”
when did you come here ()the end of last month ,i think
When shall we finish the project?--- _______ the end of this month,I think
a.since
b.by
c.at
这如何区别哪
答
How long have you been here?” “___a. since____ the end of last month.” since+过去时间点,是指一段时间,回答how longwhen did you come here (c. at)the end of last month ,i think at the end of......