Seeing his mother,the boy jumped in joy.
Hearing the news,she cried.
Walking along the stream, I met a group of hikers.
Not knowing what to do,she came to ask for my advice.

Being questioned by the police, the boy got very nervous.
Being left on her own,the little girl didn't know what to do.
Being made in China, these toys are of good quality.
Being caught in the traffic, Tom grew impatient.