Mary is flying to France soon. She will arrive Paris the morning of May 9.A. at in B i

问题补充：

Mary is flying to France soon. She will arrive Paris the morning of May, 9.

A. at, in B in, on C. in, in D. at, on

答案：

解析：arrive at +小地点，或arrive in +大 地点，在具体的某一天的早上用介词on，故选B