Earning money has always been the thing that pleases him most. _____ he becomes, _____he is.
A. The more rich / the more happy
B. The richest / the happiest
C. The richer / the happier
D. Richer and richer / happier and happier
Chọn đáp án C
You must drive slower in built up areas. _______ you drive in the city, it is _______ that you will have an accident.