That’s the factory _______we paid a visit last year.
A lot of praises have come from those _____ patients because they are getting better after taking the medicine.
The kind lady devoted all her life to _____ those homeless children.
It’s helpful to put children in a situation _____ they can see themselves differently.
Only when he reached the tea-house ______it was the same place he’d been in last year.
___ they visited our school, they showed great interest in everything they saw.