We 'll have a hiking trip,but when shall we meet?----- Let's make it ___half past eight_____the morning of JUNE 23.A at inb / onc / ind about by

We 'll have a hiking trip,but when shall we meet?----- Let's make it ___half past eight_____the morning of JUNE 23.A at inb / onc / ind about by
We 'll have a hiking trip,but when shall we meet?
----- Let's make it ___half past eight_____the morning of JUNE 23.
A at in
b / on
c / in
d about by

We 'll have a hiking trip,but when shall we meet?----- Let's make it ___half past eight_____the morning of JUNE 23.A at inb / onc / ind about by
选B
具体日期前的早上用on
Let us make it+时间是一个固定用法
表示时间的确定

at in

at ,in

at ; on
时间time 前用at，具体的日期前用 on