Mary is flying to France soon. She will arrive ______ London _____ the morning of July 19.

Mary is flying to France soon. She will arrive ______ London _____ the morning of July 19.

Mary is flying to France soon. She will arrive ______ London _____ the morning of July 19.

1. A.
   to， on
2. B.
   in， on
3. C.
   in， in
4. D.
   at， in