Hi teachers,
Grant and Flash build houses. Grant is a good builder and Flash is a bad builder. Grant builds houses slowly but well, and Flash builds houses quickly but badly. Grant is a much better builder than Flash. Flash once built a house which fell down three months later."

According to the paragraph above, are they suitable questions and answers?

a) What do they do? They build houses.
b) Who is a bad builder? Flash is.
c) How does Grant build houses? He builds them slowly but well.
d) How does Flash build houses? He builds them quickly but badly.
e) Is Flash a better builder than Grant? No, he isn't. He is a worse one.
f) What happened to Flash once? He built a house that fell down three months later.

Could you tell me better ones, please?