Freemedicalserviceis_______tonearlyallthecollegestudentsinChina.
He_______tostudyharderinthefuturesothathecouldhavemoreopportunitiestofindabetterjob.
Whenmakingmoderncameras,peoplebeganto_______plasticsformetal.
Withthehelpofthegovernment,alargenumberofpeople---_______afterthefloodin1991.
Theengineersinthislabspentseveralweeks_______theirplansforthenewbicycle.
Sometimesitisverydifficultto_______someoftheEnglishwords.Eventhenativespeakercannothelp.