[Q]: How does the sentence end?

The fisherman couldn't attach the motor to the plank on his boat, because the 

[A]: plank was too light.


[Q]: How does the sentence end?

I allow my kids to download puzzle apps, not anime apps, I think the 

[A]: puzzle apps are educational.


[Q]: How does the sentence end?

The man cut the nail of the dog, but not its hair, so the 

[A]:
hair must have been short.