根据提示和首字母补全单词或词组

根据提示和首字母补全单词或词组
on my way to work ,an old man ____(拦住）me and asked me the way to the hospital.
when he met an old man ,he b____ to him .
you are s____ to come here on time.
the two old friends embraced and k____ each other on both cheeks.