51.How did Mary make all of her money?
52.How was your date?
53.How are you doing with your new boss?
54.How should I tell him the bad news?
55.How much money did you make?
56.How much does it cost to go abroad?
57.How long will it take to get to your house?
58.How long have you been here?
60.How about going out for dinner?