In this task, you are given a question containing a blank (_) and two options. You should pick the best option to answer the question. Please answer with "A" or "B".

They had invested in a large curtain that would drop onto the stage, but it didn’t work out because the _ was too short. (A) curtain (B) stage
A

Aaron went to pick up Michael, who needed a ride to the airport, and _ was very grateful. (A) Aaron (B) Michael
B

The rod is better than the pipe for fitting in tight spaces because the _ is thicker. (A) rod (B) pipe

B