The bus ( difficult )

Target Language or Knowledge:

What is that? It is a big yellow bus. Do the wheels go round and round? Do the doors open and shut? Do the wipers go swish swish swish? Does the horn go beep beep beep? Do the people go up and down? Do the babies go wa wa wa ? Do the mommies go shh shh shh? Do the daddies go shh shh shh?