Young children are learning a local custom by watching adults , and it appears to involve pretending to be asleep .
It is almost certain that the young children watch excitedly while other children demonstrate how to use a yo-yo .
It is impossible that the young children watch excitedly while other children demonstrate how to use a yo-yo .
It is almost certain that the young children watch excitedly while other children demonstrate how to use a yo-yo .
The young children watch excitedly while other children demonstrate how to use a yo-yo .