来自刁显珍的问题
MaryisflyingtoFrancesoon．Shewillarrive_____London_____themorningofJuly19．（）A.to，onB.in，onC.at，in
Mary is flying to France soon．She will arrive _____ London _____ the morning of July 19．（）
A.to，on
B.in，on
C.at，in
