Changing Places (we Both Read - Level 1-2 (quality)) [Paperback]

In this very funny story, Mike has invented a machine that will let him instantly change places with someone else. Unfortunately, he hasn't worked out all the bugs yet, and when the machine doesn't work quite right, Mike and his sister find themselves transformed into a dog and a cat! His sister loves being a cat, but Mike just hopes he can get everything back to normal before his parents see what has happened.