he asked what had happened to me

i hope we can keep in touch after we graduate.

David didn't learn any life skills until he went to the college.

There were hardly any doctors, so he had to work hard.(啥意思?）

the police have warned the children not to play in the street.

he explained that his aim  of visiting was to make friends 

he asked what had happened to me

i hope we can keep in touch after we graduate.

David didn't learn any life skills until he went to the college.

There were hardly any doctors, so he had to work hard.(啥意思?）

the police have warned the children not to play in the street.

he explained that his aim  of visiting was to make friends