Problem: How does the sentence end?

They found it easier to diagnose the disease instead of the condition, since the 
Answer: condition was passive.

Problem: How does the sentence end?

Neil was more accomplished at singing than Donald because 
Answer: Donald lacked confidence on stage and was shy.

Problem: How does the sentence end?

If I am giving a gift to a child I prefer books over electronics as the 
Answer: books are quiet.

Problem: How does the sentence end?

The boy wanted to play basketball instead of karate because the 
Answer:
basketball game was more fun.