Freemedicalserviceis_______tonearlyallthecollegestudentsinChina.
Whenmakingmoderncameras,peoplebeganto_______plasticsformetal.
Thisriverissobigthatitisimpossibletobuilda_______underitwithoutmoderntechnology.
He_______tostudyharderinthefuturesothathecouldhavemoreopportunitiestofindabetterjob.