Para.13 When winter came,they cleared snow from her walk and checked in on her when she was ill Before long,they took to calling her“Mom”. (1)check (in)on:verify,ascertain or monitor the condition of核实，检查，看望 e.g.I'll check on working conditions in the driver's cab. I'll just go and check on the children. Para.13 ❖ When winter came, they cleared snow from her walk and checked in on her when she was ill. Before long, they took to calling her “Mom”. ❖ (1) check (in) on: verify, ascertain or monitor the condition of 核实，检查，看望 ❖ e.g. I’ll check on working conditions in the driver’s cab. ❖ I’ll just go and check on the children