They arrived __ London __ the morning of July 1A in;inB on;inC in;onD at;on

问题描述:

They arrived __ London __ the morning of July 1
A in;in
B on;in
C in;on
D at;on

c

C 大地方有介词in ,具体到某一天的早晨用介词on

C 大地方用介词in ,小地方用at
具体到某一天用介词on