[Q]: How does the sentence end?

Being a chemical engineer suited Derrick but not Randy because

[A]: Derrick had a very technical mind.

[Q]: How does the sentence end?

It was possible for Leslie to buy a Rolls Royce but not for Christopher because

[A]: Leslie was very rich.

[Q]: How does the sentence end?

Steven loved to go out on dates while Adam liked to sit at home, so

[A]:
Adam sat alone every night.