[Q]: How does the sentence end?

Betty mailed Laura's lost luggage to them in the mail, because 

[A]: Laura had left it at their house.


[Q]: How does the sentence end?

She preferred the position of the lamp over the position of the clock, because looking at the 

[A]: lamp made her calm.


[Q]: How does the sentence end?

After Derrick dropped the phone on the ground, Jason laughed, so the teacher gave 

[A]:
Jason a disapproving frown.