Fill in the blanks with a correct preposition:
a. According _____ Tom, it is impossible to live _____ Paris _____ less than 1000 euros a year.
b. This picture was painted _____ Picasso; and there’s another Picasso ______ the opposite wall.
c. He arrived ______ London ______ 6 p.m. ______ a foggy November day. We often have fogs ______ November, in general, all months ______ winter.