[Q]: How does the sentence end?

Robert was fully fluent in Spanish and tried to talk to Steven using it; when he didn't understand, 

[A]: Steven decided to learn.


[Q]: How does the sentence end?

He preferred the costume with the boots over the one with the gloves, because he thought the 

[A]: gloves looked lame.


[Q]: How does the sentence end?

She changed her university course from mathematics to history, because the 

[A]:
mathematics course is too complex.