Answer the following question about this sentence:

The cat purred.

What is the cause?
Ans: **I petted it.**

Answer the following question about this sentence:

The boy climbed the tree.

What is the cause?
Ans: **A cat got stuck in the tree.**

Answer the following question about this sentence:

The motorcyclist twisted the throttle.

What is the effect?
Ans:
**The motorcycle shot forward.**